0001423689-24-000076 | 10-Q | XBRL Viewer

Stockholders' Equity

9 Months Ended

Sep. 30, 2024

Preferred Stock

We are authorized to designate and issue up to 10.0 million shares of preferred stock in one or more classes or series. As of September 30, 2024 and December 31, 2023, 13,800, 10,350, 16,100, 23,000 and 6,900 shares of preferred stock were designated as 7.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, 6.50% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, 6.125% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock and 7.75% Series G Fixed-Rate Reset Cumulative Redeemable Preferred Stock, respectively, (referred to as "Series C, D, E, F and G Preferred Stock", respectively). As of September 30, 2024 and December 31, 2023, 13,000, 9,400, 16,100, 23,000 and 6,000 shares of Series C, D, E, F and G Preferred Stock, respectively, were issued and outstanding. Each share of preferred stock is represented by 1,000 depositary shares. Each share of preferred stock has a liquidation preference of $25,000 per share ($25 per depositary share).

Our preferred stock ranks senior to our common stock with respect to the payment of dividends and the distribution of assets upon a voluntary or involuntary liquidation, dissolution or winding up of the Company. Our preferred stock has no stated maturity, is not subject to any sinking fund or mandatory redemption and each series of preferred stock ranks on parity with one another. Under certain circumstances upon a change of control, our preferred stock is convertible to shares of our common stock. Holders of our preferred stock and depositary shares underlying our preferred stock have no voting rights, except under limited conditions. Beginning on each series' optional redemption date, we may redeem shares at $25.00 per depositary share, plus accumulated and unpaid dividends (whether or not declared), exclusively at our option.

The following table includes a summary of preferred stock depositary shares issued and outstanding as of September 30, 2024 (dollars and shares in millions):


Cumulative Redeemable Preferred Stock 1	Issue Date	Depositary Shares Issued and Outstanding	Carrying Value		Aggregate Liquidation Preference		Per Annum Dividend Rate 2,3	First Optional Redemption Date / Conversion Date 3,4
Fixed-to-Floating Rate:
Series C	August 22, 2017	13.0	$	315	$	325	10.65872%	October 15, 2022
Series D	March 6, 2019	9.4	227		235		9.87972%	April 15, 2024
Series E	October 3, 2019	16.1	390		403		6.500%	October 15, 2024
Series F	February 11, 2020	23.0	557		575		6.125%	April 15, 2025
Fixed-Rate Reset:
Series G	September 14, 2022	6.0	145		150		7.750%	October 15, 2027
Total		67.5	$	1,634	$	1,688

________________________________

1.The depositary shares underlying our preferred stock accrue dividends at an initial annual fixed rate of the $25.00 liquidation preference per depositary share from the issuance date up to, but not including, the fixed-to-floating rate or fixed-rate-reset conversion date; thereafter, dividends will accrue on a floating rate or fixed-rate-reset basis equal to the conversion rate plus a fixed spread.

2.The Series C and D per annum dividend rates represent the rates in effect as of September 30, 2024.

3.The Series C and D dividends accrue at a rate equal to the 3-Month CME Term SOFR plus 0.26161%, plus a spread of 5.111% and 4.332%, respectively, per annum, resetting quarterly in accordance with the certificate of designations for such series and the Adjustable Interest Rate (LIBOR) Act of 2021 (the “LIBOR Act”). At the conclusion of the fixed rate period (the conversion date) for the Series E and F Preferred Stock, the

dividend for such series will accrue at a rate equal to the 3-Month CME Term SOFR plus 0.26161%, plus a spread of 4.993% and 4.697%, respectively, per annum, resetting quarterly in accordance with the certificate of designations for such series and the LIBOR Act. At the conclusion of the fixed rate period for the Series G Preferred Stock, the dividend will accrue at a floating rate equal to the 5-Year US Treasury rate, plus a spread of 4.39%, per annum and will reset in accordance with the certificate of designations for such series.

4.Shares may be redeemed prior to our optional redemption date under certain circumstances intended to preserve our qualification as a REIT for U.S federal income tax purposes.

At-the-Market Offering Program

We are authorized by our Board of Directors to enter into agreements with sales agents to publicly offer and sell shares of our common stock in privately negotiated and/or at-the-market transactions from time-to-time up to a maximum aggregate offering price of our common stock. During the three and nine months ended September 30, 2024, we sold 78.1 million and 149.0 million shares, respectively, of our common stock under the sales agreements for proceeds of $781 million and $1,456 million, respectively, or $10.00 and $9.78 per common share, respectively, net of offering costs. As of September 30, 2024, shares of our common stock with an aggregate offering price of $189 million remained authorized for issuance under this program through December 31, 2025. See Note 10. Subsequent Events for additional information regarding our At-the-Market Offering Program.

Accumulated Other Comprehensive Income (Loss)

The following table summarizes changes to accumulated OCI for the three and nine months ended September 30, 2024 and 2023 (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
Accumulated Other Comprehensive Income (Loss)	2024		2023		2024		2023
Beginning Balance	$	(612)	$	(595)	$	(517)	$	(672)
OCI before reclassifications	200		(213)		105		(184)
Net loss amounts for available-for-sale securities reclassified from accumulated OCI to realized gain (loss) on sale of investment securities, net	—		—		—		48
Ending Balance	$	(412)	$	(808)	$	(412)	$	(808)

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Pledged Assets (Tables)

9 Months Ended

Sep. 30, 2024

Pledged Assets [Abstract]

Schedule of Securities and Cash Pledged as Collateral from Counterparties [Table Text Block]

As of September 30, 2024 and December 31, 2023, we had assets pledged to us from counterparties as collateral under our reverse repurchase and derivative agreements summarized in the tables below (in millions).


	September 30, 2024								December 31, 2023
Assets Pledged to AGNC	Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total		Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total
Agency securities - fair value	$	—	$	—	$	30	$	30	$	—	$	—	$	—	$	—
U.S. Treasury securities - fair value	13,334		—		—		13,334		11,667		—		306		11,973
Cash	—		2		21		23		—		89		49		138
Total	$	13,334	$	2	$	51	$	13,387	$	11,667	$	89	$	355	$	12,111

Schedule of Financial Instruments Owned and Pledged as Collateral

The following tables summarize our assets pledged as collateral under our funding, derivative and brokerage and clearing agreements by type, including securities pledged related to securities sold but not yet settled, as of September 30, 2024 and December 31, 2023 (in millions):


	September 30, 2024
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements and Other		Total
Agency RMBS - fair value	$	63,973	$	106	$	8	$	64,087
CRT - fair value	588		—		—		588
Non-Agency - fair value	224		—		—		224
U.S. Treasury securities - fair value	2,560		—		—		2,560
Accrued interest on pledged securities	290		—		—		290
Restricted cash	338		—		941		1,279
Total	$	67,973	$	106	$	949	$	69,028


	December 31, 2023
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements and Other		Total
Agency RMBS - fair value	$	49,602	$	121	$	15	$	49,738
CRT - fair value	678		—		—		678
Non-Agency - fair value	262		—		—		262
U.S. Treasury securities - fair value	1,865		—		62		1,927
Accrued interest on pledged securities	217		—		—		217
Restricted cash	9		—		1,244		1,253
Total	$	52,633	$	121	$	1,321	$	54,075

________________________________

1.Includes repledged assets received as collateral from counterparties and securities sold but not yet settled.

2.Includes $37 million and $42 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of September 30, 2024 and December 31, 2023, respectively.

Offsetting Assets and Liabilities

The following tables present information about our assets and liabilities that are subject to master netting arrangements and can potentially be offset on our consolidated balance sheets as of September 30, 2024 and December 31, 2023 (in millions):


	Offsetting of Financial and Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets				Net Amount
							Financial Instruments		Collateral Received 2
September 30, 2024
Interest rate swap and swaption agreements, at fair value 1	$	97	$	—	$	97	$	—	$	(2)	$	95
TBA securities, at fair value 1	50		—		50		(48)		(2)		—
Receivable under reverse repurchase agreements	13,494		—		13,494		(10,756)		(2,738)		—
Total	$	13,641	$	—	$	13,641	$	(10,804)	$	(2,742)	$	95

December 31, 2023
Interest rate swap and swaption agreements, at fair value 1	$	104	$	—	$	104	$	—	$	(89)	$	15
TBA securities, at fair value 1	80		—		80		(15)		(65)		—
Receivable under reverse repurchase agreements	11,618		—		11,618		(8,433)		(3,181)		4
Total	$	11,802	$	—	$	11,802	$	(8,448)	$	(3,335)	$	19

Offsetting Liabilities


	Offsetting of Financial and Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets				Net Amount
							Financial Instruments		Collateral Received 2
September 30, 2024
Interest rate swap and swaption agreements, at fair value 1	$	97	$	—	$	97	$	—	$	(2)	$	95
TBA securities, at fair value 1	50		—		50		(48)		(2)		—
Receivable under reverse repurchase agreements	13,494		—		13,494		(10,756)		(2,738)		—
Total	$	13,641	$	—	$	13,641	$	(10,804)	$	(2,742)	$	95

December 31, 2023
Interest rate swap and swaption agreements, at fair value 1	$	104	$	—	$	104	$	—	$	(89)	$	15
TBA securities, at fair value 1	80		—		80		(15)		(65)		—
Receivable under reverse repurchase agreements	11,618		—		11,618		(8,433)		(3,181)		4
Total	$	11,802	$	—	$	11,802	$	(8,448)	$	(3,335)	$	19


	Offsetting of Financial and Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets				Net Amount
							Financial Instruments		Collateral Pledged 2
September 30, 2024

TBA securities, at fair value 1	$	48	$	—	$	48	$	(48)	$	—	$	—
Repurchase agreements	65,979		—		65,979		(10,756)		(55,223)		—
Total	$	66,027	$	—	$	66,027	$	(10,804)	$	(55,223)	$	—

December 31, 2023

TBA securities, at fair value 1	$	15	$	—	$	15	$	(15)	$	—	$	—
Repurchase agreements	50,426		—		50,426		(8,433)		(41,993)		—
Total	$	50,441	$	—	$	50,441	$	(8,448)	$	(41,993)	$	—

________________________________

1.Reported under derivative assets / liabilities, at fair value in the accompanying consolidated balance sheets. Refer to Note 5 for a reconciliation of derivative assets / liabilities, at fair value to their sub-components.

2.Includes cash and securities pledged / received as collateral, at fair value. Amounts include repledged collateral. Amounts presented are limited to collateral pledged sufficient to reduce the net amount to zero for individual counterparties, as applicable.

Schedules Of Securities Pledged As Collateral Under Repurchase Agreement

The following table summarizes our securities pledged as collateral under our repurchase agreements by the remaining maturity of our borrowings, including securities pledged related to sold but not yet settled securities, as of September 30, 2024 and December 31, 2023 (in millions). For the corresponding borrowings associated with the following amounts and the interest rates thereon, refer to Note 4.


	September 30, 2024						December 31, 2023
Securities Pledged by Remaining Maturity of Repurchase Agreements 1,2	Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities		Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities
≤ 1 month	$	56,653	$	57,151	$	251	$	43,701	$	44,918	$	188
> 1 and ≤ 2 months	7,671		7,851		28		2,847		3,069		10
> 2 and ≤ 3 months	2,598		2,697		10		5,524		5,947		19
> 3 months	390		406		1		—		—		—
Total	$	67,312	$	68,105	$	290	$	52,072	$	53,934	$	217

________________________________

1.Includes $37 million and $42 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of September 30, 2024 and December 31, 2023, respectively.

2.Excludes $33 million and $397 million of repledged U.S. Treasury securities received as collateral from counterparties as of September 30, 2024 and December 31, 2023, respectively.

Fair Value Measurements (Details) - USD ($) $ in Thousands	9 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Future [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TBA securities	$ 3,000	$ 0
Derivative Liability	0	336,000
Future [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| SOFR Futures Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TBA securities	(7,000)
Derivative Liability	5,000	10,000
Interest Rate Swaption [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	2,000	89,000
Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	96,000	15,000
Interest Rate Swap [Member] \| Derivative liabilities, at fair value [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	0	1,000
Purchases Of TBAs And Forward Settling Agency Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| TBA and Forward Settling Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TBA securities	(49,000)	(81,000)
Purchases Of TBAs And Forward Settling Agency Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Sale Of TBA And Forward Settling Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TBA securities	(49,000)
Securities Sold under Agreements to Repurchase	$ 65,979,000	50,426,000
Transfers between hierarchy levels	no
Agency securities	$ 67,938,000	53,673,000
Non-Agency Securities, at Fair Value	334,000	351,000
Financial Instruments, Owned, Other, at Fair Value	620,000	723,000
U.S. Treasury securities	2,570,000	1,540,000
TBA securities	(157,000)	(185,000)
Derivative Liability	53,000	362,000
Debt of consolidated variable interest entities, at fair value	69,000	80,000
Obligation to return securities borrowed under reverse repurchase agreements, at fair value	13,009,000	10,894,000
Interest rate swaps	157,000	185,000
Mortgage Credit Investment Fund Limited Partnership	61,000	44,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	2,580,000	1,540,000
Total liabilities	13,014,000	11,240,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	69,084,000	55,009,000
Total liabilities	117,000	96,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Sale Of TBA And Forward Settling Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	$ 48,000	$ 15,000

Stockholders' Equity (At-the-Market Offering Program) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	$ 189,000		$ 189,000
Stock Issued During Period, Shares, New Issues	78,100		149,000
Stock Issued During Period, Value, New Issues	$ 781,000	$ 432,000	$ 1,456,000	$ 709,000
Stock Issued During Period, Price Per Share	$ 10.00		$ 9.78

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References + Details

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Statement of Cash Flows [Abstract]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 1,786	$ 1,882
Operating activities:
Net income (loss)	741	(257)
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of premiums and discounts on mortgage-backed securities, net	134	185
Stock based compensation	10	6
Loss on sale of investment securities, net	100	870
Unrealized (gain) loss on investment securities measured at fair value through net income, net	(1,010)	1,125
Gain on derivative instruments and other securities, net	(6)	(2,026)
(Increase) decrease in other assets	735	(75)
Increase (decrease) in other liabilities	(697)	85
Net cash provided by (used in) operating activities	7	(87)
Investing activities:
Purchases of Agency mortgage-backed securities	(28,166)	(27,386)
Purchases of credit risk transfer and non-Agency securities and other mortgage credit investments	(222)	(299)
Proceeds from sale of Agency mortgage-backed securities	9,316	5,675
Proceeds from sale of credit risk transfer and non-Agency securities	278	650
Principal collections on Agency mortgage-backed securities	3,854	3,158
Principal collections on credit risk transfer and non-Agency securities	101	56
Payments on U.S. Treasury securities	(16,462)	(24,576)
Proceeds from Sale of U.S. Treasury securities	17,010	26,973
Net payments on reverse repurchase agreements	(1,343)	(1,938)
Net proceeds from (payments on) derivative instruments	(461)	1,515
Net cash used in investing activities	(16,095)	(16,172)
Financing activities:
Proceeds from repurchase arrangements	3,980,103	2,590,724
Payments on repurchase agreements	(3,964,550)	(2,574,879)
Payments on debt of consolidated variable interest entities	(12)	(14)
Net proceeds from common stock issuance	1,455	709
Cash dividends paid	(893)	(733)
Net cash provided by financing activities	16,103	15,807
Net change in cash and cash equivalents	15	(452)
Cash and cash equivalents at end of period	507	493
Supplemental disclosure to cash flow information:
Restricted Cash and Cash Equivalents	$ 1,279	$ 1,389

Investment Securities (Tables)

9 Months Ended

Sep. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Securities by Credit Rating [Table Text Block]

As of September 30, 2024 and December 31, 2023, our investments in CRT and non-Agency securities had the following credit ratings (in millions):


	September 30, 2024						December 31, 2023
CRT and Non-Agency Security Credit Ratings 1	CRT		RMBS 2		CMBS		CRT		RMBS 2		CMBS
AAA	$	—	$	1	$	21	$	—	$	1	$	9
AA	9		—		35		—		—		31
A	—		—		29		—		—		25
BBB	8		1		28		144		14		44
BB	75		1		57		137		7		81
B	40		—		36		39		2		55
Not Rated	488		12		52		403		10		28
Total	$	620	$	15	$	258	$	723	$	34	$	273

________________________________

1.Represents the lowest of Standard and Poor's ("S&P"), Moody's, Fitch, DBRS, Kroll Bond Rating Agency ("KBRA") and Morningstar credit ratings, stated in terms of the S&P equivalent rating as of each date.

2.RMBS excludes other mortgage credit investments of $61 million and $44 million as of September 30, 2024 and December 31, 2023, respectively.

Components of Investment Securities

The following tables summarize our investment securities as of September 30, 2024 and December 31, 2023, excluding TBA securities and other mortgage credit investments (dollars in millions). Details of our TBA securities are included in Note 5.


	September 30, 2024				December 31, 2023
Investment Securities	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Agency RMBS:
Fixed rate	$	67,727	$	66,668	$	55,289	$	53,161
Adjustable rate	768		776		293		290
CMO	108		104		127		120
Interest-only and principal-only strips	61		57		67		61
Multifamily	429		439		161		162
Total Agency RMBS	69,093		68,044		55,937		53,794
Non-Agency RMBS 1	17		15		43		34
CMBS	278		258		303		273
CRT securities	573		620		682		723
Total investment securities	$	69,961	$	68,937	$	56,965	$	54,824

Summary Of Agency Securities Estimated Weighted Average Life Classifications

The following table summarizes our investments as of September 30, 2024 and December 31, 2023 according to their estimated weighted average life classification (dollars in millions):


	September 30, 2024						December 31, 2023
Estimated Weighted Average Life of Investment Securities 1	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield
≤ 3 years	$	6,517	$	6,440	6.21%	5.71%	$	942	$	961	6.57%	5.93%
> 3 years and ≤ 5 years	18,818		18,580		5.83%	5.45%	10,381		10,331		5.94%	5.52%
> 5 years and ≤10 years	40,879		42,219		4.52%	4.17%	40,895		42,988		4.55%	4.10%
> 10 years	2,723		2,722		4.19%	4.70%	2,606		2,685		4.77%	4.63%
Total	$	68,937	$	69,961	5.01%	4.68%	$	54,824	$	56,965	4.85%	4.41%

________________________________

1.Table excludes other mortgage credit investments of $61 million and $44 million as of September 30, 2024 and December 31, 2023, respectively.

Summary of Net Gain from Sale of Agency Securities

The following table is a summary of our net gain (loss) from the sale of investment securities for the three and nine months ended September 30, 2024 and 2023 by investment classification of accounting (in millions):


	Three Months Ended September 30,
	2024						2023
Investment Securities	Available-for-Sale Securities 2,3		Fair Value Option Securities		Total		Available-for-Sale Securities 2,3		Fair Value Option Securities		Total
Investment securities sold, at cost	$	—	$	(4,805)	$	(4,805)	$	—	$	(3,175)	$	(3,175)
Proceeds from investment securities sold 1	—		4,911		4,911		—		2,641		2,641
Net gain (loss) on sale of investment securities	$	—	$	106	$	106	$	—	$	(534)	$	(534)

Gross gain on sale of investment securities	$	—	$	106	$	106	$	—	$	4	$	4
Gross loss on sale of investment securities	—		—		—		—		(538)		(538)
Net gain (loss) on sale of investment securities	$	—	$	106	$	106	$	—	$	(534)	$	(534)

	Nine Months Ended September 30,
	2024						2023
Investment Securities	Available-for-Sale Securities 2,3		Fair Value Option Securities		Total		Available-for-Sale Securities 2,3		Fair Value Option Securities		Total
Investment securities sold, at cost	$	—	$	(11,400)	$	(11,400)	$	(418)	$	(6,968)	$	(7,386)
Proceeds from investment securities sold 1	—		11,300		11,300		370		6,146		6,516
Net gain (loss) on sale of investment securities	$	—	$	(100)	$	(100)	$	(48)	$	(822)	$	(870)

Gross gain on sale of investment securities	$	—	$	126	$	126	$	—	$	15	$	15
Gross loss on sale of investment securities	—		(226)		(226)		(48)		(837)		(885)
Net gain (loss) on sale of investment securities	$	—	$	(100)	$	(100)	$	(48)	$	(822)	$	(870)

________________________________

1.Proceeds include cash received during the period, plus receivable for investment securities sold during the period as of period end.

2.See Note 9 for a summary of changes in accumulated OCI.

3.During the three and nine months ended September 30, 2024, we received principal repayments on available-for-sale securities of $444 million and $882 million, respectively. During the three and nine months ended September 30, 2023, we received principal repayments on available-for-sale securities of $547 million and $1.1 billion, respectively.

Schedule of Available-for-sale Securities Reconciliation


	September 30, 2024
	Agency RMBS									Non-Agency 1
Investment Securities	Fannie Mae			Freddie Mac			Ginnie Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value 2	$	3,541		$	1,049		$	1		$	—		$	—		$	—		$	4,591
Unamortized discount	(1)			—			—			—			—			—			(1)
Unamortized premium	204			66			—			—			—			—			270
Amortized cost	3,744			1,115			1			—			—			—			4,860
Gross unrealized gains	—			—			—			—			—			—			—
Gross unrealized losses	(312)			(100)			—			—			—			—			(412)
Total available-for-sale securities, at fair value	3,432			1,015			1			—			—			—			4,448
Securities remeasured at fair value through earnings:
Par value 2	34,734			28,811			30			19			285			562			64,441
Unamortized discount	(270)			(208)			(1)			(3)			(8)			(8)			(498)
Unamortized premium	694			443			—			1			1			19			1,158
Amortized cost	35,158			29,046			29			17			278			573			65,101
Gross unrealized gains	405			352			—			—			3			47			807
Gross unrealized losses	(953)			(441)			—			(2)			(23)			—			(1,419)
Total securities remeasured at fair value through earnings	34,610			28,957			29			15			258			620			64,489
Total securities, at fair value	$	38,042		$	29,972		$	30		$	15		$	258		$	620		$	68,937
Weighted average coupon as of September 30, 2024 3	4.81		%	5.13		%	4.51		%	5.28		%	6.68		%	11.20		%	5.01		%
Weighted average yield as of September 30, 2024 4	4.44		%	4.86		%	4.98		%	6.69		%	7.40		%	8.96		%	4.68		%


	December 31, 2023
	Agency RMBS									Non-Agency 1
Investment Securities	Fannie Mae			Freddie Mac			Ginnie Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value 2	$	3,881		$	1,152		$	1		$	—		$	—		$	—		$	5,034
Unamortized discount	(1)			—			—			—			—			—			(1)
Unamortized premium	227			73			—			—			—			—			300
Amortized cost	4,107			1,225			1			—			—			—			5,333
Gross unrealized gains	—			—			—			—			—			—			—
Gross unrealized losses	(392)			(125)			—			—			—			—			(517)
Total available-for-sale securities, at fair value	3,715			1,100			1			—			—			—			4,816
Securities remeasured at fair value through earnings:
Par value 2	29,910			19,503			283			44			307			679			50,726
Unamortized discount	(108)			(59)			(3)			(3)			(7)			(9)			(189)
Unamortized premium	702			376			—			2			3			12			1,095
Amortized cost	30,504			19,820			280			43			303			682			51,632
Gross unrealized gains	170			111			1			—			2			41			325
Gross unrealized losses	(1,270)			(638)			—			(9)			(32)			—			(1,949)
Total securities remeasured at fair value through earnings	29,404			19,293			281			34			273			723			50,008
Total securities, at fair value	$	33,119		$	20,393		$	282		$	34		$	273		$	723		$	54,824
Weighted average coupon as of December 31, 2023 3	4.68		%	4.90		%	4.94		%	4.61		%	7.27		%	10.45		%	4.85		%
Weighted average yield as of December 31, 2023 4	4.22		%	4.53		%	5.16		%	4.92		%	7.04		%	8.87		%	4.41		%

________________________________

1.Non-Agency amounts exclude other mortgage credit investments of $61 million and $44 million as of September 30, 2024 and December 31, 2023, respectively.

2.Par value excludes interest-only securities. As of September 30, 2024 and December 31, 2023, Agency RMBS interest-only securities had a par value of $319 million and $336 million, respectively, and non-Agency interest-only securities had a par value of $97 million and $98 million, respectively.

3.Weighted average coupon excludes interest-only and principle-only securities. As of September 30, 2024 and December 31, 2023 Agency RMBS interest-only securities have a weighted average coupon of 1.83% and 1.77%, respectively, and non-Agency interest-only securities had a weighted average coupon of 0.81% and 0.71%, respectively.

4.Incorporates a weighted average future constant prepayment rate assumption of 13.2% and 11.4% based on forward rates as of September 30, 2024 and December 31, 2023, respectively.

Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value

The following table presents the gross unrealized loss and fair values of securities classified as available-for-sale by length of time that such securities have been in a continuous unrealized loss position as of September 30, 2024 and December 31, 2023 (in millions):


	Unrealized Loss Position For
	Less than 12 Months				12 Months or More				Total
Securities Classified as Available-for-Sale	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
September 30, 2024	$	—	$	—	$	4,430	$	(412)	$	4,430	$	(412)
December 31, 2023	$	—	$	—	$	4,797	$	(517)	$	4,797	$	(517)

Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Number of Shares Outstanding	805,000	620,200	747,900	598,400
Weighted Average Number of Fully Vested Restricted Stock Units and Performance Share Units Outstanding	2,200	1,800	2,100	1,800
Weighted Average Number of Shares Outstanding, Basic	807,200	622,000	750,000	600,200
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	2,900	0	2,300	0
Weighted Average Number of Shares Outstanding, Diluted	810,100	622,000	752,300	600,200
Net Income (Loss) Available to Common Stockholders, Basic	$ 313	$ (423)	$ 645	$ (349)
Earnings Per Share, Basic	$ 0.39	$ (0.68)	$ 0.86	$ (0.58)
Earnings Per Share, Diluted	$ 0.39	$ (0.68)	$ 0.86	$ (0.58)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		1,300		1,100

Investment Securities (Summary Of Changes In Accumulated OCI For Available-For-Sale Security) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Unrealized Gains and (Losses), Net	$ 200	$ (213)	$ 105	$ (136)
Agency Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning OCI Balance	(612)	(595)	(517)	(672)
Unrealized Gains and (Losses), Net	200	(213)	105	(184)
Reversal of Unrealized (Gains) and Losses, Net on Realization	0	0	0	48
Ending OCI Balance	$ (412)	$ (808)	$ (412)	$ (808)

Insider Trading Arrangements shares in Thousands	3 Months Ended	9 Months Ended
Insider Trading Arrangements shares in Thousands	Sep. 30, 2024 shares	Sep. 30, 2024 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted		false
Non-Rule 10b5-1 Arrangement Terminated		false
Peter Federico [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On August 27, 2024, Peter Federico, our President and Chief Executive Officer and director, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense of Rule 10b5-1(c) providing for the sale of up to 145,000 shares of our common stock. The trading arrangement will expire on August 20, 2025 or earlier if all transactions under the trading arrangement are completed.
Name	Peter Federico
Title	President and Chief Executive Officer and director
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	August 27, 2024
Aggregate Available	145	145

Derivative and Other Hedging Instruments (Fair Value Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivative asset, fair value	$ 157,000		$ 157,000			$ 185,000
Derivative liability, fair value	(53,000)		(53,000)			(362,000)
Derivative assets, at fair value	(157,000)		(157,000)			(185,000)
Derivative Liability	(53,000)		(53,000)			(362,000)
U.S. Treasury securities	2,570,000		2,570,000			1,540,000
U.S. Treasury Securities - short	(13,009,000)		(13,009,000)			(10,894,000)
Total - (short)/long, net	(10,439,000)		(10,439,000)			(9,354,000)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(1,430,000)	$ 1,623,000	62,000	$ 2,175,000
Net Fair Value of Interest Rate Swaps Excluding the Recognition of Variation Margin Settlements as a Reduction of Carrying Value	1,400,000		1,400,000			2,900,000
TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	27,804,000	35,448,000	89,717,000	138,448,000
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period				(155,147,000)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	98,000	(148,000)	11,000	(172,000)
Derivative, Fair Value, Net	1,000		1,000			66,000
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	39,146,000		39,146,000			44,476,000
Derivative liability, fair value	0		0			(1,000)
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	25,000	1,920,000	11,595,000	5,396,000
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	(9,575,000)	(5,250,000)	(16,925,000)	(7,825,000)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(1,036,000)	759,000	(199,000)	1,387,000
Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Derivative asset, fair value	96,000		96,000			15,000
Interest Rate Swaption [Member]
Derivative [Line Items]
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period		0	0	0
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period		(250,000)	(1,250,000)	(1,700,000)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		89,000	33,000	49,000
Interest Rate Swaption [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Derivative asset, fair value	2,000		2,000			89,000
Purchases Of TBAs And Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative liability, fair value	(48,000)		(48,000)			(15,000)
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	(29,151,000)	(43,386,000)	(90,885,000)
US Treasury Securities [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(17,000)	412,000	258,000	389,000
Derivative, Fair Value, Net	3,000		3,000			(336,000)
Credit Default Swap
Derivative [Line Items]
Derivative liability, fair value	0		0			0
Derivative, Fair Value, Net	(7,000)		(7,000)			(6,000)
SOFR Futures Contracts
Derivative [Line Items]
Derivative liability, fair value	(5,000)		(5,000)			(10,000)
Derivative assets, at fair value	7,000		7,000			0
US Treasury Securities [Member] \| Fair Value, Recurring [Member] \| Future [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivative [Line Items]
Derivative assets, at fair value	3,000		3,000			0
Derivative Liability	0		0			(336,000)
TBA and Forward Settling Agency Securities [Member] \| Fair Value, Recurring [Member] \| Purchases Of TBAs And Forward Settling Agency Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Derivative assets, at fair value	(49,000)		(49,000)			(81,000)
Sale Of TBA And Forward Settling Agency Securities [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Derivative Liability	(48,000)		(48,000)			(15,000)
Sale Of TBA And Forward Settling Agency Securities [Member] \| Fair Value, Recurring [Member] \| Purchases Of TBAs And Forward Settling Agency Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Derivative assets, at fair value	(49,000)		(49,000)
Short [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	3,983,000	5,668,000	10,247,000	15,470,000
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	(4,759,000)	(4,161,000)	(8,371,000)	(12,709,000)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(509,000)	537,000	(8,000)	614,000
Long [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	36,000	(20,000)	(19,000)	(75,000)
Debt Securities, Trading, and Equity Securities, FV-NI	2,528,000	260,000	2,528,000	260,000	$ 2,427,000	$ 1,492,000	$ 1,543,000	$ 357,000
Trading Securities Added During the Period	4,349,000	1,499,000	7,690,000	11,786,000
Notional Amount Of Trading Securities Settlement Expiration During The Period	(4,248,000)	(2,782,000)	(6,654,000)	(11,883,000)
Long [Member] \| SOFR Futures Contracts
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 36,000	$ (6,000)	$ 23,000	$ (25,000)

Net Income (Loss) Per Common Share (Notes)

9 Months Ended

Sep. 30, 2024

Net Income (Loss) Per Common Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]


	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Weighted average number of common shares issued and outstanding	805.0		620.2		747.9		598.4
Weighted average number of fully vested restricted stock units outstanding	2.2		1.8		2.1		1.8
Weighted average number of common shares outstanding - basic	807.2		622.0		750.0		600.2
Weighted average number of dilutive unvested restricted stock units outstanding	2.9		—		2.3		—
Weighted average number of common shares outstanding - diluted	810.1		622.0		752.3		600.2
Net income (loss) available (attributable) to common stockholders	$	313	$	(423)	$	645	$	(349)
Net income (loss) per common share - basic	$	0.39	$	(0.68)	$	0.86	$	(0.58)
Net income (loss) per common share - diluted	$	0.39	$	(0.68)	$	0.86	$	(0.58)

Earnings Per Share [Text Block]

Net Income (Loss) Per Common Share

Basic net income (loss) per common share is computed by dividing (i) net income (loss) available (attributable) to common stockholders by (ii) the sum of our weighted-average number of common shares outstanding and the weighted-average number of vested but not yet issued time- and performance-based restricted stock units ("RSUs") that were outstanding during the period, which were granted under our long-term incentive program to employees and non-employee members of the Board of Directors. Diluted net income (loss) per common share assumes the issuance of all potential common stock equivalents unless doing so would reduce a loss or increase income per common share. Our potential common stock equivalents consist of unvested time- and performance-based RSUs. The following table presents the computations of basic and diluted net income (loss) per common share for the periods indicated (shares and dollars in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Weighted average number of common shares issued and outstanding	805.0		620.2		747.9		598.4
Weighted average number of fully vested restricted stock units outstanding	2.2		1.8		2.1		1.8
Weighted average number of common shares outstanding - basic	807.2		622.0		750.0		600.2
Weighted average number of dilutive unvested restricted stock units outstanding	2.9		—		2.3		—
Weighted average number of common shares outstanding - diluted	810.1		622.0		752.3		600.2
Net income (loss) available (attributable) to common stockholders	$	313	$	(423)	$	645	$	(349)
Net income (loss) per common share - basic	$	0.39	$	(0.68)	$	0.86	$	(0.58)
Net income (loss) per common share - diluted	$	0.39	$	(0.68)	$	0.86	$	(0.58)

For the three and nine months ended September 30, 2023, 1.3 million and 1.1 million, respectively, of potentially dilutive unvested time- and performance-based RSUs outstanding were excluded from the computation of diluted net income (loss) per common share because including them would have been anti-dilutive for the period.

Pledged Assets (Offsetting Assets and Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Offsetting Assets and Liabilities [Line Items]
Collateral Received	$ (2,742)
Assets [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	13,641	$ 11,802
Gross Amount Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	13,641	11,802
Financial Instruments	(10,804)	(8,448)
Collateral Received		(3,335)
Net Amount	95	19
Assets [Member] \| ERROR in label resolution.
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	97	104
Net Amounts of Assets Presented in the Consolidated Balance Sheets	97	104
Financial Instruments	0	0
Collateral Received	(2)	(89)
Net Amount	95	15
Assets [Member] \| TBA and Forward Settling Agency Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	50	80
Net Amounts of Assets Presented in the Consolidated Balance Sheets	50	80
Financial Instruments	(48)	(15)
Collateral Received	(2)	(65)
Net Amount	0	0
Assets [Member] \| Reverse Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Net Amount	0	4
Liability [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	66,027	50,441
Gross Amount Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	66,027	50,441
Financial Instruments	(10,804)	(8,448)
Collateral Received	(55,223)	(41,993)
Net Amount	0
Liability [Member] \| Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Net Amount	0	0
Liability [Member] \| ERROR in label resolution.
Offsetting Assets and Liabilities [Line Items]
Net Amount		0
Liability [Member] \| TBA and Forward Settling Agency Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	48	15
Net Amounts of Assets Presented in the Consolidated Balance Sheets	48	15
Financial Instruments	(48)	(15)
Collateral Received	0	0
Net Amount	0	0
Reverse Repurchase Agreements [Member] \| Assets [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	13,494	11,618
Gross Amount Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	13,494	11,618
Financial Instruments	(10,756)	(8,433)
Collateral Received	(2,738)	(3,181)
Repurchase Agreements [Member] \| Liability [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	65,979	50,426
Gross Amount Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	65,979	50,426
Financial Instruments	(10,756)	(8,433)
Collateral Received	$ (55,223)	$ (41,993)

Investment Securities (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Weighted average expected constant prepayment rate	13.20%	11.40%
Debt, at fair value	$ (69,000)	$ (80,000)
Mortgage Credit Investment Fund Limited Partnership	61,000	44,000
Agency Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Unamortized premium balance	900,000	1,200,000
TBA securities Fifteen Year and Thirty Year Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Net long TBA position, at fair value	4,100,000	5,400,000
TBA, net carrying value	$ 1,000	$ 66,000

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aa)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aaa)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

+ Details

Organization (Details)	9 Months Ended
Organization (Details)	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Required Annual Distribution of Taxable Net Income	90.00%
Intended annual distribution of taxable net income	100.00%

Investment Securities

9 Months Ended

Sep. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Investment Securities

As of September 30, 2024 and December 31, 2023, our investment portfolio consisted of $68.9 billion and $54.8 billion investment securities, at fair value, respectively, $4.1 billion and $5.4 billion net TBA securities, at fair value, respectively, and other mortgage credit investments of $61 million and $44 million, respectively, which we account for under the equity method of accounting. Our TBA position is reported at its net carrying value totaling $1 million and $66 million as of September 30, 2024 and December 31, 2023, respectively, in derivative assets / (liabilities) on our accompanying consolidated balance sheets. The net carrying value of our TBA position represents the difference between the fair value of the underlying security and the cost basis or the forward price to be paid or received for the underlying security.

As of September 30, 2024 and December 31, 2023, our investment securities had a net unamortized premium balance of $0.9 billion and $1.2 billion, respectively.


	September 30, 2024				December 31, 2023
Investment Securities	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Agency RMBS:
Fixed rate	$	67,727	$	66,668	$	55,289	$	53,161
Adjustable rate	768		776		293		290
CMO	108		104		127		120
Interest-only and principal-only strips	61		57		67		61
Multifamily	429		439		161		162
Total Agency RMBS	69,093		68,044		55,937		53,794
Non-Agency RMBS 1	17		15		43		34
CMBS	278		258		303		273
CRT securities	573		620		682		723
Total investment securities	$	69,961	$	68,937	$	56,965	$	54,824


	September 30, 2024
	Agency RMBS									Non-Agency 1
Investment Securities	Fannie Mae			Freddie Mac			Ginnie Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value 2	$	3,541		$	1,049		$	1		$	—		$	—		$	—		$	4,591
Unamortized discount	(1)			—			—			—			—			—			(1)
Unamortized premium	204			66			—			—			—			—			270
Amortized cost	3,744			1,115			1			—			—			—			4,860
Gross unrealized gains	—			—			—			—			—			—			—
Gross unrealized losses	(312)			(100)			—			—			—			—			(412)
Total available-for-sale securities, at fair value	3,432			1,015			1			—			—			—			4,448
Securities remeasured at fair value through earnings:
Par value 2	34,734			28,811			30			19			285			562			64,441
Unamortized discount	(270)			(208)			(1)			(3)			(8)			(8)			(498)
Unamortized premium	694			443			—			1			1			19			1,158
Amortized cost	35,158			29,046			29			17			278			573			65,101
Gross unrealized gains	405			352			—			—			3			47			807
Gross unrealized losses	(953)			(441)			—			(2)			(23)			—			(1,419)
Total securities remeasured at fair value through earnings	34,610			28,957			29			15			258			620			64,489
Total securities, at fair value	$	38,042		$	29,972		$	30		$	15		$	258		$	620		$	68,937
Weighted average coupon as of September 30, 2024 3	4.81		%	5.13		%	4.51		%	5.28		%	6.68		%	11.20		%	5.01		%
Weighted average yield as of September 30, 2024 4	4.44		%	4.86		%	4.98		%	6.69		%	7.40		%	8.96		%	4.68		%


	December 31, 2023
	Agency RMBS									Non-Agency 1
Investment Securities	Fannie Mae			Freddie Mac			Ginnie Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value 2	$	3,881		$	1,152		$	1		$	—		$	—		$	—		$	5,034
Unamortized discount	(1)			—			—			—			—			—			(1)
Unamortized premium	227			73			—			—			—			—			300
Amortized cost	4,107			1,225			1			—			—			—			5,333
Gross unrealized gains	—			—			—			—			—			—			—
Gross unrealized losses	(392)			(125)			—			—			—			—			(517)
Total available-for-sale securities, at fair value	3,715			1,100			1			—			—			—			4,816
Securities remeasured at fair value through earnings:
Par value 2	29,910			19,503			283			44			307			679			50,726
Unamortized discount	(108)			(59)			(3)			(3)			(7)			(9)			(189)
Unamortized premium	702			376			—			2			3			12			1,095
Amortized cost	30,504			19,820			280			43			303			682			51,632
Gross unrealized gains	170			111			1			—			2			41			325
Gross unrealized losses	(1,270)			(638)			—			(9)			(32)			—			(1,949)
Total securities remeasured at fair value through earnings	29,404			19,293			281			34			273			723			50,008
Total securities, at fair value	$	33,119		$	20,393		$	282		$	34		$	273		$	723		$	54,824
Weighted average coupon as of December 31, 2023 3	4.68		%	4.90		%	4.94		%	4.61		%	7.27		%	10.45		%	4.85		%
Weighted average yield as of December 31, 2023 4	4.22		%	4.53		%	5.16		%	4.92		%	7.04		%	8.87		%	4.41		%

________________________________

1.Non-Agency amounts exclude other mortgage credit investments of $61 million and $44 million as of September 30, 2024 and December 31, 2023, respectively.

4.Incorporates a weighted average future constant prepayment rate assumption of 13.2% and 11.4% based on forward rates as of September 30, 2024 and December 31, 2023, respectively.

As of September 30, 2024 and December 31, 2023, our investments in CRT and non-Agency securities had the following credit ratings (in millions):


	September 30, 2024						December 31, 2023
CRT and Non-Agency Security Credit Ratings 1	CRT		RMBS 2		CMBS		CRT		RMBS 2		CMBS
AAA	$	—	$	1	$	21	$	—	$	1	$	9
AA	9		—		35		—		—		31
A	—		—		29		—		—		25
BBB	8		1		28		144		14		44
BB	75		1		57		137		7		81
B	40		—		36		39		2		55
Not Rated	488		12		52		403		10		28
Total	$	620	$	15	$	258	$	723	$	34	$	273

________________________________

2.RMBS excludes other mortgage credit investments of $61 million and $44 million as of September 30, 2024 and December 31, 2023, respectively.

Our CRT securities reference the performance of loans underlying Agency RMBS issued by Fannie Mae or Freddie Mac, which were subject to their underwriting standards.

The actual maturities of our investment securities are generally shorter than their stated contractual maturities. The actual maturities of our Agency and high credit quality non-Agency RMBS are primarily affected by principal prepayments and to a lesser degree the contractual lives of the underlying mortgages and periodic contractual principal repayments. The actual maturities of our credit-oriented investments are primarily impacted by their contractual lives and default and loss recovery

rates. As of September 30, 2024 and December 31, 2023, the weighted average expected constant prepayment rate ("CPR") over the remaining life of our Agency and high credit quality non-Agency RMBS investment portfolio was 13.2% and 11.4%, respectively. Our estimates can differ materially for different securities and thus our individual holdings have a wide range of projected CPRs. The following table summarizes our investments as of September 30, 2024 and December 31, 2023 according to their estimated weighted average life classification (dollars in millions):


	September 30, 2024						December 31, 2023
Estimated Weighted Average Life of Investment Securities 1	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield
≤ 3 years	$	6,517	$	6,440	6.21%	5.71%	$	942	$	961	6.57%	5.93%
> 3 years and ≤ 5 years	18,818		18,580		5.83%	5.45%	10,381		10,331		5.94%	5.52%
> 5 years and ≤10 years	40,879		42,219		4.52%	4.17%	40,895		42,988		4.55%	4.10%
> 10 years	2,723		2,722		4.19%	4.70%	2,606		2,685		4.77%	4.63%
Total	$	68,937	$	69,961	5.01%	4.68%	$	54,824	$	56,965	4.85%	4.41%

________________________________

1.Table excludes other mortgage credit investments of $61 million and $44 million as of September 30, 2024 and December 31, 2023, respectively.


	Unrealized Loss Position For
	Less than 12 Months				12 Months or More				Total
Securities Classified as Available-for-Sale	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
September 30, 2024	$	—	$	—	$	4,430	$	(412)	$	4,430	$	(412)
December 31, 2023	$	—	$	—	$	4,797	$	(517)	$	4,797	$	(517)

Gains and Losses on Sale of Investment Securities


	Three Months Ended September 30,
	2024						2023
Investment Securities	Available-for-Sale Securities 2,3		Fair Value Option Securities		Total		Available-for-Sale Securities 2,3		Fair Value Option Securities		Total
Investment securities sold, at cost	$	—	$	(4,805)	$	(4,805)	$	—	$	(3,175)	$	(3,175)
Proceeds from investment securities sold 1	—		4,911		4,911		—		2,641		2,641
Net gain (loss) on sale of investment securities	$	—	$	106	$	106	$	—	$	(534)	$	(534)

Gross gain on sale of investment securities	$	—	$	106	$	106	$	—	$	4	$	4
Gross loss on sale of investment securities	—		—		—		—		(538)		(538)
Net gain (loss) on sale of investment securities	$	—	$	106	$	106	$	—	$	(534)	$	(534)

	Nine Months Ended September 30,
	2024						2023
Investment Securities	Available-for-Sale Securities 2,3		Fair Value Option Securities		Total		Available-for-Sale Securities 2,3		Fair Value Option Securities		Total
Investment securities sold, at cost	$	—	$	(11,400)	$	(11,400)	$	(418)	$	(6,968)	$	(7,386)
Proceeds from investment securities sold 1	—		11,300		11,300		370		6,146		6,516
Net gain (loss) on sale of investment securities	$	—	$	(100)	$	(100)	$	(48)	$	(822)	$	(870)

Gross gain on sale of investment securities	$	—	$	126	$	126	$	—	$	15	$	15
Gross loss on sale of investment securities	—		(226)		(226)		(48)		(837)		(885)
Net gain (loss) on sale of investment securities	$	—	$	(100)	$	(100)	$	(48)	$	(822)	$	(870)

________________________________

1.Proceeds include cash received during the period, plus receivable for investment securities sold during the period as of period end.

2.See Note 9 for a summary of changes in accumulated OCI.

Derivative and Other Hedging Instruments (US Treasury Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
U.S. Treasury securities, net	$ (10,439)		$ (9,354)
Weighted Average Yield Percentage	4.68%		4.41%
At Par Value [Member]
Derivative [Line Items]
U.S. Treasury securities, net	$ (10,695)		$ (9,855)
US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	3		(336)
TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	4,164	$ 5,511	5,332	$ 2,351	$ 10,289	$ 19,050
Derivative, Forward Settlement Value	(4,067)		(5,288)
Derivative Asset, Fair Value, Gross Asset	(4,068)		(5,354)
Derivative, Fair Value, Net	1		66
Less Than or Equal to Five Years
Derivative [Line Items]
U.S. Treasury securities, net	2,451		1,408
Greater Than Five Years and Less than or Equal to Seven Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(1,635)		(818)
Greater Than Seven Years and Less than or Equal to Ten Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(9,729)		(8,649)
Greater Than Ten Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(1,782)		(1,796)
Greater Than Ten Years [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	3		(76)
Greater Than Five Years and Less than or Equal to Seven Years [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	0		(103)
Greater Than Seven Years and Less than or Equal to Ten Years [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	$ 0		$ (157)
Short [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Weighted Average Yield Percentage	3.69%		3.64%
Short [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 13,223	13,999	$ 11,347	10,134	8,627	7,373
Derivative, Forward Settlement Value	(129)		(7,168)
Derivative Asset, Fair Value, Gross Asset	(126)		(7,504)
Short [Member] \| US Treasury Securities [Member] \| Future [Member]
Derivative [Line Items]
Derivative, Notional Amount	41	$ 41	6,429	$ 8,969	$ 5,900	$ 9,213
Short [Member] \| Greater Than Ten Years [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	791		791
Derivative, Forward Settlement Value	(986)		(913)
Derivative Asset, Fair Value, Gross Asset	(983)		(989)
Short [Member] \| Greater Than Five Years and Less than or Equal to Seven Years [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	750		2,714
Derivative, Forward Settlement Value	857		(2,961)
Derivative Asset, Fair Value, Gross Asset	857		(3,064)
Short [Member] \| Greater Than Seven Years and Less than or Equal to Ten Years [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	0		2,924
Derivative, Forward Settlement Value	0		(3,294)
Derivative Asset, Fair Value, Gross Asset	$ 0		$ (3,451)
Long [Member] \| US Treasury Securities [Member]
Derivative [Line Items]
Weighted Average Yield Percentage	4.06%		4.39%
Fair Value Hedging [Member]
Derivative [Line Items]
U.S. Treasury securities, net	$ (10,439)		$ (9,354)
Fair Value Hedging [Member] \| Less Than or Equal to Five Years
Derivative [Line Items]
U.S. Treasury securities, net	2,493		1,454
Fair Value Hedging [Member] \| Greater Than Five Years and Less than or Equal to Seven Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(1,470)		(703)
Fair Value Hedging [Member] \| Greater Than Seven Years and Less than or Equal to Ten Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(9,547)		(8,187)
Fair Value Hedging [Member] \| Greater Than Ten Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(1,915)		(1,918)
Fair Value Hedging [Member] \| Long [Member]
Derivative [Line Items]
U.S. Treasury securities, net	2,600		1,500
At Cost Basis [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(10,441)		(9,475)
At Cost Basis [Member] \| Less Than or Equal to Five Years
Derivative [Line Items]
U.S. Treasury securities, net	2,464		1,419
At Cost Basis [Member] \| Greater Than Five Years and Less than or Equal to Seven Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(1,633)		(821)
At Cost Basis [Member] \| Greater Than Seven Years and Less than or Equal to Ten Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(9,442)		(8,277)
At Cost Basis [Member] \| Greater Than Ten Years [Member]
Derivative [Line Items]
U.S. Treasury securities, net	$ (1,830)		$ (1,796)

Stockholders' Equity Schedule of Dividends Declared (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per common share	$ 0.36	$ 0.36	$ 1.08	$ 1.08

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Investment Securities (Summary Of Continuous Unrealized Loss Positions Of Available-For-Sale Security) (Details) - Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Unrealized Loss Position For - Unrealized Loss - Less than 12 Months	$ 0	$ 0
Unrealized Loss Position For - Unrealized Loss - 12 Months or More	(412,000)	(517,000)
Unrealized Loss Position For - Unrealized Loss - Total	(412,000)	(517,000)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	4,430,000	4,797,000
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 4,430,000	$ 4,797,000

Derivative and Other Hedging Instruments (Summary Of Outstanding Interest Rate Swaps) (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) month	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) month
Interest Rate Swaps Linked to Overnight Index Swap Rate	18.00%		18.00%		20.00%
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (1,430)	$ 1,623	$ 62	$ 2,175
Interest Rate Swaps Linked to Secured Overnight Financing Rate	82.00%		82.00%		80.00%
Interest Rate Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		89	$ 33	49
Interest Rate Swap [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (1,036)	$ 759	(199)	$ 1,387
Notional Amount	$ 39,146		$ 39,146		$ 44,476
Average Fixed Pay Rate	1.43%		1.43%		0.57%
Average Receive Rate	4.94%		4.94%		5.37%
Average Maturity (Years)			4 years 6 months		3 years
Receiver Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 1		$ 1
Less Than or Equal to One Year [Member] \| Interest Rate Swaption [Member]
Notional Amount					$ 1,250
Average Fixed Pay Rate					2.61%
Options At Cost					$ 28
Interest Rate Derivatives, at Fair Value, Net					$ 86
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration \| month					5
Average Maturity (Years)					10 years
Less Than or Equal to One Year [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 7,750		$ 7,750		$ 13,750
Average Fixed Pay Rate	0.13%		0.13%		0.14%
Average Receive Rate	4.90%		4.90%		5.37%
Average Maturity (Years)			9 months 18 days		4 months 24 days
Less Than or Equal to One Year [Member] \| Receiver Swaption [Member]
Notional Amount					$ 150
Average Fixed Pay Rate					2.98%
Options At Cost					$ 3
Interest Rate Derivatives, at Fair Value, Net					$ 3
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration \| month					24
Average Maturity (Years)					5 years
Greater Than One Year and Less Than or Equal to Two Years [Member] \| Receiver Swaption [Member]
Notional Amount	$ 150		$ 150
Average Fixed Pay Rate	2.98%		2.98%
Options At Cost			$ 3
Interest Rate Derivatives, at Fair Value, Net	$ 2		$ 2
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration \| month			15
Average Maturity (Years)			5 years
Greater Than One Year and Less Than or Equal to Three Years [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 11,300		$ 11,300		$ 15,800
Average Fixed Pay Rate	0.22%		0.22%		0.17%
Average Receive Rate	4.93%		4.93%		5.36%
Average Maturity (Years)			1 year 10 months 24 days		2 years
Greater Than Three Years and Less Than or Equal to Five Years [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 3,800		$ 3,800		$ 5,800
Average Fixed Pay Rate	0.25%		0.25%		0.24%
Average Receive Rate	4.96%		4.96%		5.38%
Average Maturity (Years)			4 years 2 months 12 days		3 years 10 months 24 days
Greater Than Five Years and Less than or Equal to Seven Years [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 4,150		$ 4,150		$ 3,900
Average Fixed Pay Rate	2.15%		2.15%		0.92%
Average Receive Rate	4.94%		4.94%		5.37%
Average Maturity (Years)			6 years		6 years 2 months 12 days
Greater Than Seven Years and Less than or Equal to Ten Years [Member] \| Interest Rate Swap [Member]
Notional Amount	$ 12,146		$ 12,146		$ 5,226
Average Fixed Pay Rate	3.51%		3.51%		3.06%
Average Receive Rate	4.96%		4.96%		5.38%
Average Maturity (Years)			9 years		9 years 2 months 12 days

Summary of Significant Accounting Policies (Details)	9 Months Ended
Summary of Significant Accounting Policies (Details)	Sep. 30, 2024
Derivative [Line Items]
Required Annual Distribution of Taxable Net Income	90.00%

Pledged Assets

9 Months Ended

Sep. 30, 2024

Pledged Assets [Abstract]

Pledged Assets

Our funding agreements require us to fully collateralize our obligations under the agreements based upon our counterparties' collateral requirements and their determination of the fair value of the securities pledged as collateral, which fluctuates with changes in interest rates, credit quality and liquidity conditions within the investment banking, mortgage finance and real estate industries. Our derivative contracts similarly require us to fully collateralize our obligations under such agreements, which will vary over time based on similar factors as well as our counterparties' determination of the value of the derivative contract. We are typically required to post initial margin upon execution of derivative transactions, such as under our interest rate swap agreements and TBA contracts, and subsequently post or receive variation margin based on daily fluctuations in fair value. Our brokerage and custody agreements and the clearing organizations utilized by our wholly-owned captive broker-dealer subsidiary, Bethesda Securities, LLC, also require that we post minimum daily clearing deposits. If we breach our collateral requirements, we will be required to fully settle our obligations under the agreements, which could include a forced liquidation of our pledged collateral.

Our counterparties also apply a "haircut" to our pledged collateral, which means our collateral is valued at slightly less than market value and limits the amount we can borrow against our securities. This haircut reflects the underlying risk of the specific collateral and protects our counterparty against a change in its value. Our agreements do not specify the haircut; rather, haircuts are determined on an individual transaction basis. Consequently, our funding agreements and derivative contracts expose us to credit risk relating to potential losses that could be recognized if our counterparties fail to perform their obligations under such agreements. We minimize this risk by limiting our counterparties to major financial institutions with acceptable credit ratings or to registered clearinghouses and U.S. government agencies, and we monitor our positions with individual counterparties. In the event of a default by a counterparty, we may have difficulty obtaining our assets pledged as collateral to such counterparty and may not receive payments as and when due to us under the terms of our derivative agreements. In the case of centrally cleared instruments, we could be exposed to credit risk if the central clearing agency or a clearing member defaults on its respective obligation to perform under the contract. However, we believe that the risk is minimal due to the clearing exchanges' initial and daily mark-to-market margin requirements, clearinghouse guarantee funds and other resources that are available in the event of a clearing member default.

As of September 30, 2024, our maximum amount at risk with any counterparty related to our repurchase agreements, excluding the Fixed Income Clearing Corporation, was less than 2% of our tangible stockholders' equity (or the excess/shortfall of the value of collateral pledged/received over our repurchase agreement liabilities/reverse repurchase agreement receivables). As of September 30, 2024, 7% of our tangible stockholder's equity was at risk with the Fixed Income Clearing Corporation.

Assets Pledged to Counterparties


	September 30, 2024
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements and Other		Total
Agency RMBS - fair value	$	63,973	$	106	$	8	$	64,087
CRT - fair value	588		—		—		588
Non-Agency - fair value	224		—		—		224
U.S. Treasury securities - fair value	2,560		—		—		2,560
Accrued interest on pledged securities	290		—		—		290
Restricted cash	338		—		941		1,279
Total	$	67,973	$	106	$	949	$	69,028


	December 31, 2023
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements and Other		Total
Agency RMBS - fair value	$	49,602	$	121	$	15	$	49,738
CRT - fair value	678		—		—		678
Non-Agency - fair value	262		—		—		262
U.S. Treasury securities - fair value	1,865		—		62		1,927
Accrued interest on pledged securities	217		—		—		217
Restricted cash	9		—		1,244		1,253
Total	$	52,633	$	121	$	1,321	$	54,075

________________________________

1.Includes repledged assets received as collateral from counterparties and securities sold but not yet settled.

2.Includes $37 million and $42 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of September 30, 2024 and December 31, 2023, respectively.


	September 30, 2024						December 31, 2023
Securities Pledged by Remaining Maturity of Repurchase Agreements 1,2	Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities		Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities
≤ 1 month	$	56,653	$	57,151	$	251	$	43,701	$	44,918	$	188
> 1 and ≤ 2 months	7,671		7,851		28		2,847		3,069		10
> 2 and ≤ 3 months	2,598		2,697		10		5,524		5,947		19
> 3 months	390		406		1		—		—		—
Total	$	67,312	$	68,105	$	290	$	52,072	$	53,934	$	217

________________________________

1.Includes $37 million and $42 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of September 30, 2024 and December 31, 2023, respectively.

2.Excludes $33 million and $397 million of repledged U.S. Treasury securities received as collateral from counterparties as of September 30, 2024 and December 31, 2023, respectively.

Assets Pledged from Counterparties


	September 30, 2024								December 31, 2023
Assets Pledged to AGNC	Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total		Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total
Agency securities - fair value	$	—	$	—	$	30	$	30	$	—	$	—	$	—	$	—
U.S. Treasury securities - fair value	13,334		—		—		13,334		11,667		—		306		11,973
Cash	—		2		21		23		—		89		49		138
Total	$	13,334	$	2	$	51	$	13,387	$	11,667	$	89	$	355	$	12,111

Offsetting Assets and Liabilities

Certain of our repurchase agreements and derivative transactions are governed by underlying agreements that generally provide for a right of setoff under master netting arrangements (or similar agreements), including in the event of default or in the event of bankruptcy of either party to the transactions. We present our assets and liabilities subject to such arrangements on a gross basis in our consolidated balance sheets. The following tables present information about our assets and liabilities that are subject to master netting arrangements and can potentially be offset on our consolidated balance sheets as of September 30, 2024 and December 31, 2023 (in millions):


	Offsetting of Financial and Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets				Net Amount
							Financial Instruments		Collateral Received 2
September 30, 2024
Interest rate swap and swaption agreements, at fair value 1	$	97	$	—	$	97	$	—	$	(2)	$	95
TBA securities, at fair value 1	50		—		50		(48)		(2)		—
Receivable under reverse repurchase agreements	13,494		—		13,494		(10,756)		(2,738)		—
Total	$	13,641	$	—	$	13,641	$	(10,804)	$	(2,742)	$	95

December 31, 2023
Interest rate swap and swaption agreements, at fair value 1	$	104	$	—	$	104	$	—	$	(89)	$	15
TBA securities, at fair value 1	80		—		80		(15)		(65)		—
Receivable under reverse repurchase agreements	11,618		—		11,618		(8,433)		(3,181)		4
Total	$	11,802	$	—	$	11,802	$	(8,448)	$	(3,335)	$	19


	Offsetting of Financial and Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets				Net Amount
							Financial Instruments		Collateral Pledged 2
September 30, 2024

TBA securities, at fair value 1	$	48	$	—	$	48	$	(48)	$	—	$	—
Repurchase agreements	65,979		—		65,979		(10,756)		(55,223)		—
Total	$	66,027	$	—	$	66,027	$	(10,804)	$	(55,223)	$	—

December 31, 2023

TBA securities, at fair value 1	$	15	$	—	$	15	$	(15)	$	—	$	—
Repurchase agreements	50,426		—		50,426		(8,433)		(41,993)		—
Total	$	50,441	$	—	$	50,441	$	(8,448)	$	(41,993)	$	—

________________________________

Investment Securities Investment Securities (Summary of Investment in Agency Security) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	$ 69,961,000	$ 56,965,000
Debt Securities, Trading and Available-for-sale	68,937,000	54,824,000
Total agency MBS, at fair value	68,044,000	53,794,000
Mortgage Credit Investment Fund Limited Partnership	$ 61,000	$ 44,000
Weighted average coupon	5.01%	4.85%
Agency Securities [Member] \| Interest-Only-Strip
Debt and Equity Securities, FV-NI [Line Items]
Weighted average coupon	1.83%	1.77%
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	$ 17,000	$ 43,000
Debt Securities, Trading and Available-for-sale	15,000	34,000
Commercial Mortgage Backed Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	278,000	303,000
Debt Securities, Trading and Available-for-sale	258,000	273,000
Credit Risk Transfer Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	573,000	682,000
Debt Securities, Trading and Available-for-sale	$ 620,000	$ 723,000
Non-Agency [Member] \| Interest-Only-Strip
Debt and Equity Securities, FV-NI [Line Items]
Weighted average coupon	0.81%	0.71%
Fixed Income Securities [Member] \| Agency Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	$ 67,727,000	$ 55,289,000
Debt Securities, Trading and Available-for-sale	66,668,000	53,161,000
Adjustable-Rate [Member] \| Agency Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	768,000	293,000
Debt Securities, Trading and Available-for-sale	776,000	290,000
Collateralized Mortgage Obligations [Member] \| Agency Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	108,000	127,000
Debt Securities, Trading and Available-for-sale	104,000	120,000
Multifamily [Member] \| Agency Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	429,000	161,000
Debt Securities, Trading and Available-for-sale	439,000	162,000
Interest Only And Principal Only Strip [Member] \| Agency Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	61,000	67,000
Debt Securities, Trading and Available-for-sale	57,000	61,000
Agency Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	69,093,000	55,937,000
Trading Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Trading Securities Par	64,441,000	50,726,000
Trading Securities [Member] \| Agency Securities [Member] \| Interest-Only-Strip
Debt and Equity Securities, FV-NI [Line Items]
Trading Securities Par	319,000	336,000
Trading Securities [Member] \| Non-Agency [Member] \| Interest-Only-Strip
Debt and Equity Securities, FV-NI [Line Items]
Trading Securities Par	$ 97,000	$ 98,000

Pledged Assets (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Pledged Assets [Abstract]
Retained Interests in Consolidated VIE's Pledged as Collateral Under Repurchase Agreements	$ 37	$ 42
Risk Of Repurchase Agreement To Stockholders Equity	2.00%

Stockholders' Equity (Follow-On Equity Offerings) (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	78,100		149,000
Stock Issued During Period, Value, New Issues	$ 781,000	$ 432,000	$ 1,456,000	$ 709,000

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 272
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483014/272-10-45-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 272
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482987/272-10-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(27)(b))
-Publisher FASB
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
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-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Name Accounting Standards Codification
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Section S99
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-Subparagraph (SX 210.6-03(i)(2)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Name Accounting Standards Codification
-Section S99
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

+ Details

- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References + Details

Repurchase Agreements and Reverse Repurchase Agreements (Tables)

9 Months Ended

Sep. 30, 2024

Disclosure of Repurchase Agreements [Abstract]

Schedule of Borrowings under Repurchase Agreements and Weighted Average Interest Rates

The following table summarizes our borrowings under repurchase agreements by their remaining maturities as of September 30, 2024 and December 31, 2023 (dollars in millions):


	September 30, 2024					December 31, 2023
Remaining Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity
Investment securities repo
≤ 1 month	$	53,118	5.26	%	8	$	40,946	5.61	%	11
> 1 to ≤ 3 months	9,904		5.08	%	51	7,933		5.55	%	64
> 3 to ≤ 6 months	377		4.86	%	95	—		—	%	—




Investment securities repo	63,399		5.23	%	15	48,879		5.60	%	19
U.S. Treasury repo:
≤ 1 month	2,580		5.06	%	1	1,547		5.54	%	2
Total	$	65,979	5.22	%	14	$	50,426	5.60	%	19

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Financial Instruments Owned and Pledged as Collateral [Line Items]
Preferred Stock, Liquidation Preference, Value	$ 1,688,000	$ 1,688,000
Preferred Stock C, Liquidation Preference, Value	325,000
Preferred Stock D, Liquidation Preference, Value	$ 235,000
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,500,000	1,500,000
Common Stock, Shares, Issued	844,200	694,300
Common Stock, Shares, Outstanding	844,200	694,300
US Treasury Securities [Member] \| Short [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Derivative, Forward Settlement Value	$ (129,000)	$ (7,168,000)
Common Stock [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Depository shares each representing a 1/1,000th interest in a share of 7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Title of 12(b) Security	Depositary shares of 7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Depository shares each representing a 1/1,000th interest in a share of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Title of 12(b) Security	Depositary shares of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Depository shares each representing a 1/1000th interest in a share of 6.500% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Title of 12(b) Security	Depositary shares of 6.50% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Depositary shares each representing a 1/1000th interest in a share of 6.125% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Title of 12(b) Security	Depositary shares of 6.125% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Agency Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged Financial Instruments, Securities	$ 62,331,000	49,575,000
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged Financial Instruments, Securities	224,000	262,000
Receivable for securities sold [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged Financial Instruments, Securities	1,612,000
Asset Pledged as Collateral [Member] \| Credit Risk Transfer Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged Financial Instruments, Securities	588,000	678,000
Asset Pledged as Collateral [Member] \| US Treasury Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged Financial Instruments, Securities	$ 2,527,000	$ 1,530,000

Pledged Assets (Securities Pledged as Collateral) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	$ 67,312,000	$ 52,072,000
Agency Securities Pledged As Collateral Amortized Cost	68,105,000	53,934,000
Agency Securities Pledged As Collateral Accrued Interest	290,000	217,000
Maturity Less than 30 Days [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	56,653,000	43,701,000
Agency Securities Pledged As Collateral Amortized Cost	57,151,000	44,918,000
Agency Securities Pledged As Collateral Accrued Interest	251,000	188,000
Maturity 31 To 59 Days [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	7,671,000	2,847,000
Agency Securities Pledged As Collateral Amortized Cost	7,851,000	3,069,000
Agency Securities Pledged As Collateral Accrued Interest	28,000	10,000
Maturity 60 To 90 Days [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	2,598,000	5,524,000
Agency Securities Pledged As Collateral Amortized Cost	2,697,000	5,947,000
Agency Securities Pledged As Collateral Accrued Interest	10,000	19,000
Maturity over 90 days [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	390,000	0
Agency Securities Pledged As Collateral Amortized Cost	406,000	0
Agency Securities Pledged As Collateral Accrued Interest	1,000	0
Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	63,973,000	49,602,000
Credit Risk Transfer Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	588,000	678,000
Credit Risk Transfer Securities [Member] \| Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	588,000	678,000
US Treasury Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	2,560,000	1,927,000
Securities Received as Collateral, Amount Repledged and Sold	33,000	397,000
US Treasury Securities [Member] \| Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	2,560,000	1,865,000
Non-Agency [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	224,000	262,000
Non-Agency [Member] \| Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	$ 224,000	$ 262,000

Consolidated Statements Of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Dividends declared per common share	$ 0.36	$ 0.36	$ 1.08	$ 1.08
Net gain (loss) on sale of investment securities	$ 106	$ (534)	$ (100)	$ (870)
Unrealized gain (loss) on investment securities measured at fair value through net income, net	1,742	(1,356)	1,010	(1,125)
(Loss) gain on derivative instruments and other securities, net	(1,408)	1,574	6	2,026
Nonoperating Income (Expense)	440	(316)	916	31
Interest income	756	593	2,093	1,401
Interest expense	820	646	2,190	1,621
Net interest income	(64)	(53)	(97)	(220)
Labor and Related Expense	21	14	52	42
General and administrative expenses	9	9	26	26
Total expenses	30	23	78	68
Net income (loss)	346	(392)	741	(257)
Dividend on preferred stock	33	31	96	92
Net income (loss) available (attributable) to common shareholders	313	(423)	645	(349)
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	200	(213)	105	(136)
Comprehensive (loss) income	546	(605)	846	(393)
Comprehensive (loss) income (attributable) available to common shareholders	$ 513	$ (636)	$ 750	$ (485)
Weighted average number of common shares outstanding - basic	807.2	622.0	750.0	600.2
Weighted average number of common shares outstanding - diluted	810.1	622.0	752.3	600.2
Earnings Per Share, Basic	$ 0.39	$ (0.68)	$ 0.86	$ (0.58)
Net income (loss) per common share - diluted	$ 0.39	$ (0.68)	$ 0.86	$ (0.58)

Balance Sheet Offsetting (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Other Assets [Line Items]
Other assets	$ 353	$ 1,088
Other liabilities	$ 366	$ 1,252

Investment Securities (Components Of Investment Securities) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Debt Securities, Trading	$ 64,489,000	$ 50,008,000
Debt Securities, Trading and Available-for-sale	$ 68,937,000	$ 54,824,000
Weighted average coupon	5.01%	4.85%
Weighted average yield	4.68%	4.41%
Future Prepayment Rate Assumption Of Investment Portfolio	13.20%	11.40%
Fannie Mae [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	$ 34,610,000	$ 29,404,000
Debt Securities, Trading and Available-for-sale	$ 38,042,000	$ 33,119,000
Weighted average coupon	4.81%	4.68%
Weighted average yield	4.44%	4.22%
Freddie Mac [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	$ 28,957,000	$ 19,293,000
Debt Securities, Trading and Available-for-sale	$ 29,972,000	$ 20,393,000
Weighted average coupon	5.13%	4.90%
Weighted average yield	4.86%	4.53%
Ginnie Mae [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	$ 29,000	$ 281,000
Debt Securities, Trading and Available-for-sale	$ 30,000	$ 282,000
Weighted average coupon	4.51%	4.94%
Weighted average yield	4.98%	5.16%
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	$ 15,000	$ 34,000
Debt Securities, Trading and Available-for-sale	$ 15,000	$ 34,000
Weighted average coupon	5.28%	4.61%
Weighted average yield	6.69%	4.92%
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	$ 258,000	$ 273,000
Debt Securities, Trading and Available-for-sale	$ 258,000	$ 273,000
Weighted average coupon	6.68%	7.27%
Weighted average yield	7.40%	7.04%
Credit Risk Transfer Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	$ 620,000	$ 723,000
Debt Securities, Trading and Available-for-sale	$ 620,000
Weighted average coupon	11.20%	10.45%
Weighted average yield	8.96%	8.87%
Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Par value 2	$ 4,591,000	$ 5,034,000
Debt Securities, Available-for-Sale, Unamortized discount	1,000	1,000
Debt Securities, Available-for-Sale, Unamortized premium	270,000	300,000
Debt Securities, Available-for-sale, Amortized Cost	4,860,000	5,333,000
Debt Securities, Available-for-Sale, Gross Unrealized Losses	412,000	517,000
Total available-for-sale securities, at fair value	4,448,000	4,816,000
Debt Securities, Available-for-Sale, Gross Unrealized Gains	0	0
Available-for-sale Securities [Member] \| Fannie Mae [Member]
Schedule of Investments [Line Items]
Par value 2	3,541,000	3,881,000
Debt Securities, Available-for-Sale, Unamortized discount	1,000	1,000
Debt Securities, Available-for-Sale, Unamortized premium	204,000	227,000
Debt Securities, Available-for-sale, Amortized Cost	3,744,000	4,107,000
Debt Securities, Available-for-Sale, Gross Unrealized Losses	312,000	392,000
Total available-for-sale securities, at fair value	3,432,000	3,715,000
Debt Securities, Available-for-Sale, Gross Unrealized Gains	0	0
Available-for-sale Securities [Member] \| Freddie Mac [Member]
Schedule of Investments [Line Items]
Par value 2	1,049,000	1,152,000
Debt Securities, Available-for-Sale, Unamortized discount	0	0
Debt Securities, Available-for-Sale, Unamortized premium	66,000	73,000
Debt Securities, Available-for-sale, Amortized Cost	1,115,000	1,225,000
Debt Securities, Available-for-Sale, Gross Unrealized Losses	100,000	125,000
Total available-for-sale securities, at fair value	1,015,000	1,100,000
Debt Securities, Available-for-Sale, Gross Unrealized Gains	0	0
Available-for-sale Securities [Member] \| Ginnie Mae [Member]
Schedule of Investments [Line Items]
Par value 2	1,000	1,000
Debt Securities, Available-for-Sale, Unamortized discount	0	0
Debt Securities, Available-for-Sale, Unamortized premium	0	0
Debt Securities, Available-for-sale, Amortized Cost	1,000	1,000
Debt Securities, Available-for-Sale, Gross Unrealized Losses	0	0
Total available-for-sale securities, at fair value	1,000	1,000
Debt Securities, Available-for-Sale, Gross Unrealized Gains	0	0
Trading Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading Securities, Gross Unrealized Gains	807,000	325,000
Debt Securities, Trading Securities, Gross Unrealized Losses	1,419,000	1,949,000
Trading Securities Par	64,441,000	50,726,000
Debt Securities, Trading Securities, Unamortized discount	498,000	189,000
Debt Securities, Trading Securities, Unamortized Premium	1,158,000	1,095,000
Debt Securities, Trading, Amortized Cost	65,101,000	51,632,000
Trading Securities [Member] \| Fannie Mae [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading Securities, Gross Unrealized Gains	405,000	170,000
Debt Securities, Trading Securities, Gross Unrealized Losses	953,000	1,270,000
Trading Securities Par	34,734,000	29,910,000
Debt Securities, Trading Securities, Unamortized discount	270,000	108,000
Debt Securities, Trading Securities, Unamortized Premium	694,000	702,000
Debt Securities, Trading, Amortized Cost	35,158,000	30,504,000
Trading Securities [Member] \| Freddie Mac [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading Securities, Gross Unrealized Gains	352,000	111,000
Debt Securities, Trading Securities, Gross Unrealized Losses	441,000	638,000
Trading Securities Par	28,811,000	19,503,000
Debt Securities, Trading Securities, Unamortized discount	208,000	59,000
Debt Securities, Trading Securities, Unamortized Premium	443,000	376,000
Debt Securities, Trading, Amortized Cost	29,046,000	19,820,000
Trading Securities [Member] \| Ginnie Mae [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading Securities, Gross Unrealized Gains	0	1,000
Debt Securities, Trading Securities, Gross Unrealized Losses	0	0
Trading Securities Par	30,000	283,000
Debt Securities, Trading Securities, Unamortized discount	(1,000)	(3,000)
Debt Securities, Trading Securities, Unamortized Premium	0	0
Debt Securities, Trading, Amortized Cost	29,000	280,000
Trading Securities [Member] \| Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading Securities, Gross Unrealized Gains	0	0
Debt Securities, Trading Securities, Gross Unrealized Losses	2,000	9,000
Trading Securities Par	19,000	44,000
Debt Securities, Trading Securities, Unamortized discount	3,000	3,000
Debt Securities, Trading Securities, Unamortized Premium	1,000	2,000
Debt Securities, Trading, Amortized Cost	17,000	43,000
Trading Securities [Member] \| Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading Securities, Gross Unrealized Gains	3,000	2,000
Debt Securities, Trading Securities, Gross Unrealized Losses	23,000	32,000
Trading Securities Par	285,000	307,000
Debt Securities, Trading Securities, Unamortized discount	8,000	7,000
Debt Securities, Trading Securities, Unamortized Premium	1,000	3,000
Debt Securities, Trading, Amortized Cost	278,000	303,000
Trading Securities [Member] \| Credit Risk Transfer Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading Securities, Gross Unrealized Gains	47,000	41,000
Debt Securities, Trading Securities, Gross Unrealized Losses	0	0
Trading Securities Par	562,000	679,000
Debt Securities, Trading Securities, Unamortized discount	8,000	9,000
Debt Securities, Trading Securities, Unamortized Premium	19,000	12,000
Debt Securities, Trading, Amortized Cost	573,000	682,000
Securities Remeasured at Fair Value [Member] \| Credit Risk Transfer Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading and Available-for-sale		723,000
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading and Available-for-sale	15,000	34,000
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading and Available-for-sale	258,000	273,000
Credit Risk Transfer Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading and Available-for-sale	620,000	723,000
Credit Risk Transfer Securities [Member] \| Securities Remeasured at Fair Value [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading and Available-for-sale	$ 620,000	$ 723,000

Investment Securities Securities by Credit Rating (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	$ 64,489,000	$ 50,008,000
Debt Securities, Trading and Available-for-sale	68,937,000	54,824,000
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading and Available-for-sale	15,000	34,000
Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading and Available-for-sale	258,000	273,000
Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading and Available-for-sale	620,000	723,000
Securities Remeasured at Fair Value [Member] \| Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading and Available-for-sale	620,000	723,000
BBB Rating [Member] \| Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	1,000	14,000
BBB Rating [Member] \| Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	28,000	44,000
BBB Rating [Member] \| Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	8,000	144,000
BB Rating [Member] \| Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	1,000	7,000
BB Rating [Member] \| Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	57,000	81,000
BB Rating [Member] \| Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	75,000	137,000
AAA Rating [Member] \| Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	1,000	1,000
AAA Rating [Member] \| Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	21,000	9,000
AAA Rating [Member] \| Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	0
AA Rating [Member] \| Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	0
AA Rating [Member] \| Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	35,000	31,000
AA Rating [Member] \| Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	9,000	0
A Rating [Member] \| Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	0
A Rating [Member] \| Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	29,000	25,000
A Rating [Member] \| Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	0
B Rating [Member] \| Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	2,000
B Rating [Member] \| Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	36,000	55,000
B Rating [Member] \| Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	40,000	39,000
Not Rated [Member] \| Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	12,000	10,000
Not Rated [Member] \| Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	52,000	28,000
Not Rated [Member] \| Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	$ 488,000	$ 403,000

Pledged Assets (Assets Pledged as Collateral) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Offsetting Assets and Liabilities [Line Items]
Accrued interest on pledged securities	$ 290,000	$ 217,000
Restricted cash	1,279,000	1,253,000	$ 1,389,000
Total Fair Value of Securities Pledged and Accrued Interest	69,028,000
Total Fair Value Of Agency Securities Pledged And Accrued Interest		54,075,000
Security Owned and Pledged as Collateral, Fair Value	67,312,000	52,072,000
Retained Interests in Consolidated VIE's Pledged as Collateral Under Repurchase Agreements	37,000	42,000
Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	63,973,000	49,602,000
Derivative Agreements and Other
Offsetting Assets and Liabilities [Line Items]
Total Fair Value of Securities Pledged and Accrued Interest	949,000	1,321,000
Security Owned and Pledged as Collateral, Fair Value	8,000	15,000
Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Accrued interest on pledged securities	290,000	217,000
Total Fair Value of Securities Pledged and Accrued Interest	67,973,000
Total Fair Value Of Agency Securities Pledged And Accrued Interest		52,633,000
Variable Interest Entity, Primary Beneficiary [Member]
Offsetting Assets and Liabilities [Line Items]
Accrued interest on pledged securities	0	0
Total Fair Value of Securities Pledged and Accrued Interest	106,000
Total Fair Value Of Agency Securities Pledged And Accrued Interest		121,000
Security Owned and Pledged as Collateral, Fair Value	106,000	121,000
Includes Sold But Not Yet Settled Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	64,087,000	49,738,000
Credit Risk Transfer Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	588,000	678,000
Credit Risk Transfer Securities [Member] \| Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	588,000	678,000
Non-Agency [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	224,000	262,000
Non-Agency [Member] \| Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	224,000	262,000
US Treasury Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	2,560,000	1,927,000
Securities Received as Collateral, Amount Repledged and Sold	33,000	397,000
US Treasury Securities [Member] \| Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	2,560,000	1,865,000
US Treasury Securities [Member] \| Derivative Agreements and Other
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	0	62,000
Derivative Agreements and Other
Offsetting Assets and Liabilities [Line Items]
Accrued interest on pledged securities	0	0
Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted cash	338,000	9,000
Excluding Cash Received [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted cash	1,279,000	1,253,000
Derivative Agreements and Other
Offsetting Assets and Liabilities [Line Items]
Restricted cash	$ 941,000	$ 1,244,000

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2024	Oct. 31, 2024
Entity Information [Line Items]
Entity Incorporation, State or Country Code	DE
Document Transition Report	false
Document Quarterly Report	true
Entity Tax Identification Number	26-1701984
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2024
Entity File Number	001-34057
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Entity Registrant Name	AGNC INVESTMENT CORP.
Entity Address, Address Line One	7373 Wisconsin Avenue, 22nd Floor
Entity Address, City or Town	Bethesda
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	20814
City Area Code	301
Local Phone Number	968-9315
Entity Central Index Key	0001423689
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		885,639,833
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Common Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	AGNC
Security Exchange Name	NASDAQ
Depository shares each representing a 1/1,000th interest in a share of 7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Depositary shares of 7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Trading Symbol	AGNCN
Security Exchange Name	NASDAQ
Depository shares each representing a 1/1,000th interest in a share of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Depositary shares of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Trading Symbol	AGNCM
Security Exchange Name	NASDAQ
Depository shares each representing a 1/1000th interest in a share of 6.500% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Depositary shares of 6.50% Series E Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Trading Symbol	AGNCO
Security Exchange Name	NASDAQ
Depositary shares each representing a 1/1000th interest in a share of 6.125% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Depositary shares of 6.125% Series F Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Trading Symbol	AGNCP
Security Exchange Name	NASDAQ
Depositary shares each representing a 1/1000th interest in a share of 7.75% Series G Fixed Rate Reset Cumulative Redeemable Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Depositary shares of 7.75% Series G Fixed-Rate Reset Cumulative Redeemable Preferred Stock
Trading Symbol	AGNCL
Security Exchange Name	NASDAQ

Summary of Significant Accounting Policies Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2024
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Derivatives, Policy [Policy Text Block]	Derivative Instruments We use a variety of derivative instruments to hedge a portion of our exposure to market risks, including interest rate, prepayment, extension and liquidity risks. The objective of our risk management strategy is to reduce fluctuations in net book value over a range of interest rate scenarios. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing during a period of rising interest rates. The primary instruments that we use are interest rate swaps, options to enter into interest rate swaps ("swaptions"), U.S. Treasury securities and U.S. Treasury futures contracts. We also use forward contracts in the Agency RMBS "to-be-announced" market, or TBA securities, to invest in and finance Agency securities and to periodically reduce our exposure to Agency RMBS. We account for derivative instruments in accordance with ASC Topic 815, Derivatives and Hedging ("ASC 815"). ASC 815 requires an entity to recognize all derivatives as either assets or liabilities in our accompanying consolidated balance sheets and to measure those instruments at fair value. None of our derivative instruments have been designated as hedging instruments for accounting purposes under the provisions of ASC 815, consequently changes in the fair value of our derivative instruments are reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Our derivative agreements generally contain provisions that allow for netting or setting off derivative assets and liabilities with the counterparty; however, we report related assets and liabilities on a gross basis in our consolidated balance sheets. Derivative instruments in a gain position are reported as derivative assets at fair value and derivative instruments in a loss position are reported as derivative liabilities at fair value in our consolidated balance sheets. Changes in fair value of derivative instruments and periodic settlements related to our derivative instruments are recorded in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Net cash receipts from and payments on our derivative instruments are classified in our consolidated statements of cash flows according to the underlying nature or purpose of the derivative transaction, generally in the investing section. Interest rate swap agreements We use interest rate swaps to economically hedge the variable cash flows associated with our borrowings made under repurchase agreements. Under our interest rate swap agreements, we typically pay a fixed rate and receive a floating rate ("payer swaps") based on a short-term benchmark rate, such as the Secured Overnight Financing Rate ("SOFR") and Overnight Index Swap Rate ("OIS"). Our interest rate swaps typically have terms from one to 10 years. Our interest rate swaps are centrally cleared through a registered commodities exchange. The clearing exchange requires that we post an "initial margin" amount determined by the exchange. The initial margin amount is intended to be set at a level sufficient to protect the exchange from the interest rate swap's maximum estimated single-day price movement and is subject to adjustment based on changes in market volatility and other factors. We also exchange daily settlements of "variation margin" based upon changes in fair value, as measured by the exchange. Pursuant to rules governing central clearing activities, we recognize variation margin settlements as a direct reduction of the carrying value of the interest rate swap asset or liability. Interest rate swaptions We purchase interest rate swaptions to help mitigate the potential impact of larger, more rapid changes in interest rates on the performance of our investment portfolio. Interest rate swaptions provide us the option to enter into an interest rate swap agreement for a predetermined notional amount, stated term and pay and receive interest rates in the future. Our interest rate swaption agreements are not subject to central clearing. The difference between the premium paid and the fair value of the swaption is reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. If a swaption expires unexercised, the realized loss on the swaption would be equal to the premium paid. If we sell or exercise a swaption, the realized gain or loss on the swaption would be equal to the difference between the cash or the fair value of the underlying interest rate swap and the premium paid. TBA securities A TBA security is a forward contract for the purchase or sale of Agency RMBS at a predetermined price, face amount, issuer, coupon and stated maturity on an agreed-upon future date. The specific Agency RMBS to be delivered into the contract are not known until shortly before the settlement date. We may choose, prior to settlement, to move the settlement of these securities out to a later date by entering into an offsetting TBA position, net settling the offsetting positions for cash, and simultaneously purchasing or selling a similar TBA contract for a later settlement date (together referred to as a "dollar roll transaction"). The Agency securities purchased or sold for a forward settlement date are typically priced at a discount to equivalent securities settling in the current month. This difference, or "price drop," is the economic equivalent of interest income on the underlying Agency securities, less an implied funding cost, over the forward settlement period (referred to as "dollar roll income"). Consequently, forward purchases of Agency securities and dollar roll transactions represent a form of off-balance sheet financing. We account for TBA contracts as derivative instruments since either the TBA contracts do not settle in the shortest period of time possible or we cannot assert that it is probable at inception and throughout the term of the TBA contract that we will physically settle the contract on the settlement date. We account for TBA dollar roll transactions as a series of derivative transactions. U.S. Treasury securities and US Treasury futures contracts We use U.S. Treasury securities and U.S. Treasury futures contracts to mitigate the potential impact of changes in interest rates on the performance of our portfolio. We enter into short-sales of U.S. Treasury securities by borrowing the securities under reverse repurchase agreements and selling them into the market. We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on our accompanying consolidated balance sheets based on the value of the underlying U.S. Treasury security as of the reporting date. Treasury futures contracts are standardized contracts that obligate us to sell or buy U.S. Treasury securities for future delivery. Gains and losses associated with U.S. Treasury securities and U.S. Treasury futures contracts are recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.
Investment, Policy [Policy Text Block]	Investment Securities Agency RMBS consist of residential mortgage pass-through securities and collateralized mortgage obligations ("CMOs") guaranteed by the Federal National Mortgage Association ("Fannie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac," and together with Fannie Mae, the "GSEs") or the Government National Mortgage Association ("Ginnie Mae"). CRT securities are risk sharing instruments issued by the GSEs, and similarly structured transactions issued by third-party market participants, that synthetically transfer a portion of the risk associated with credit losses within pools of conventional residential mortgage loans from the GSEs and/or third parties to private investors. Unlike Agency RMBS, full repayment of the original principal balance of CRT securities is not guaranteed by a GSE or U.S. Government agency; rather, "credit risk transfer" is achieved by writing down the outstanding principal balance of the CRT securities if credit losses on a related pool of loans exceed certain thresholds. By reducing the amount that they are obligated to repay to holders of CRT securities, the GSEs and/or other third parties offset credit losses on the related loans. Non-Agency RMBS and CMBS (together, "Non-Agency MBS") are backed by residential and commercial mortgage loans, respectively, packaged and securitized by a private institution, such as a commercial bank. Non-Agency MBS typically benefit from credit enhancements derived from structural elements, such as subordination, over-collateralization or insurance, but nonetheless carry a higher level of credit exposure than Agency RMBS. All of our securities are reported at fair value on our consolidated balance sheet. Accounting Standards Codification ("ASC") Topic 320, Investments—Debt and Equity Securities, requires that at the time of purchase, we designate a security as held-to-maturity, available-for-sale or trading, depending on our ability and intent to hold such security to maturity. Alternatively, we may elect the fair value option of accounting for securities pursuant to ASC Topic 825, Financial Instruments. Prior to fiscal year 2017, we primarily designated our investment securities as available-for-sale. On January 1, 2017, we began electing the fair value option of accounting for all investment securities newly acquired after such date. Unrealized gains and losses on securities classified as available-for-sale are reported in accumulated other comprehensive income ("OCI"), whereas unrealized gains and losses on securities for which we elected the fair value option, or are classified as trading, are reported in net income through other gain (loss). Upon the sale of a security designated as available-for-sale, we determine the cost of the security and the amount of unrealized gain or loss to reclassify out of accumulated OCI into earnings based on the specific identification method. In our view, the election of the fair value option simplifies the accounting for investment securities and more appropriately reflects the results of our operations for a reporting period by presenting the fair value changes for these assets in a manner consistent with the presentation and timing of the fair value changes for our derivative instruments. We generally recognize gains or losses through net income on available-for-sale securities only if the security is sold; however, if the fair value of a security declines below its amortized cost and we determine that it is more likely than not that we will incur a realized loss on the security when we sell the asset, we will recognize the difference between the amortized cost and the fair value in net income as a component of other gain (loss). We did not recognize any loss on available for sale securities through net income that we held as of September 30, 2024 because, as of such date, we neither intended to sell any securities in an unrealized loss position nor was it more likely than not that we would be required to sell such securities before recovery of their amortized cost basis. Since all of our available-for-sale designated securities consist of Agency RMBS, we do not have an allowance for credit losses. We have not recognized impairment losses on our available-for-sale securities through net income for the periods presented in our consolidated financial statements.
Interest Income [Policy Text Block]	Interest Income Interest income is accrued based on the outstanding principal amount of the investment securities and their contractual terms. Premiums or discounts associated with the purchase of Agency RMBS and non-Agency MBS of high credit quality are amortized or accreted into interest income, respectively, over the projected lives of the securities, including contractual payments and estimated prepayments, using the effective interest method in accordance with ASC Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs. We estimate long-term prepayment speeds of our mortgage securities using a third-party service and market data. The third-party service provider estimates prepayment speeds using models that incorporate the forward yield curve, primary to secondary mortgage rate spreads, current mortgage rates, mortgage rates of the outstanding loans, age and size of the outstanding loans, loan-to-value ratios, interest rate volatility and other factors. We review the prepayment speeds estimated by the third-party service for reasonableness with consideration given to both historical prepayment speeds and current market conditions. If based on our assessment, we believe that the third-party model does not fully reflect our expectations of the current prepayment landscape we may make adjustments to the models. We review our actual and anticipated prepayment experience on at least a quarterly basis and effective yields are recalculated when differences arise between (i) our previous estimate of future prepayments and (ii) actual prepayments to date and our current estimate of future prepayments. We are required to record an adjustment in the current period to premium amortization / discount accretion for the cumulative effect of the difference in the effective yields as if the recalculated yield had been in place as of the security's acquisition date through the reporting date. At the time we purchase CRT securities and non-Agency MBS that are not of high credit quality, we determine an effective yield based on our estimate of the timing and amount of future cash flows and our cost basis. Our initial cash flow estimates for these investments are based on our observations of current information and events and include assumptions related to interest rates, prepayment rates, collateral call provisions, and the impact of default and severity rates on the timing and amount of credit losses. On at least a quarterly basis, we review the estimated cash flows and make appropriate adjustments based on inputs and analysis received from external sources, internal models, and our judgment regarding such inputs and other factors. Any resulting changes in effective yield are recognized prospectively based on the current amortized cost of the investment adjusted for credit impairments, if any.

- Definition

Disclosure of accounting policy for investment in financial asset.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2024
Subsequent Events [Abstract]
Subsequent Event	Subsequent Events At-the-Market Offering Program During October 2024, we entered into amendments to the agreements with the sales agents that govern our At-the-Market Offering Program (see Note 9. Stockholders' Equity). Pursuant to these amendments and the prospectus supplement filed in connection with the amendments, we may publicly offer and sell shares of our common stock in privately negotiated and/or at-the-market transactions from time-to-time up to a maximum aggregate offering price of our common stock of $1.5 billion from and after the date of the amendment through December 31, 2025. Common Stock Repurchase Program We have maintained a stock repurchase plan that enables us to repurchase shares of our common stock from time to time. We intend to repurchase shares under the stock repurchase program only when the repurchase price is less than our then-current estimate of tangible net book value per common share. Our existing stock repurchase plan, which had $1 billion in remaining capacity, was due to expire on December 31, 2024. During October 2024, our Board of Directors terminated this stock repurchase plan and replaced it with a new plan authorizing us to repurchase up to $1 billion of common stock through December 31, 2026. Under the new plan, we may repurchase shares in the open market or through privately negotiated transactions or pursuant to a trading plan that may be adopted in accordance with Rule 10b5-1 of the Exchange Act. Our stock repurchase program may be limited or terminated at any time without prior notice.

Derivative and Other Hedging Instruments (Tables)

9 Months Ended

Sep. 30, 2024

Derivative [Line Items]

Schedule of Interest Rate Swap Agreement by Receive Index (as a percentage of Notional Amount) [Table Text Block]


Receive Fixed / Pay Variable Interest Rate Swaps	September 30, 2024					December 31, 2023
Years to Maturity	Notional Amount		Average Variable Pay Rate 1	Average Fixed Receive Rate	Average Maturity (Years)	Notional Amount		Average Variable Pay Rate 1	Average Fixed Receive Rate	Average Maturity (Years)

> 1 to ≤ 3 years	$	—	—%	—%	0.0	$	(1,000)	5.38%	4.65%	1.5

Schedule of Outstanding Derivatives Not Designated as Hedging Instruments

The table below summarizes fair value information about our derivative and other hedging instrument assets/(liabilities) as of September 30, 2024 and December 31, 2023 (in millions):




Derivative and Other Hedging Instruments	Balance Sheet Location	September 30, 2024		December 31, 2023
Interest rate swaps 1	Derivative assets, at fair value	$	96	$	15
Swaptions	Derivative assets, at fair value	2		89
TBA and forward settling non-Agency securities	Derivative assets, at fair value	49		81
U.S. Treasury futures - short	Derivative assets, at fair value	3		—
SOFR futures contracts - long	Derivative assets, at fair value	7		—
Total derivative assets, at fair value		$	157	$	185

Interest rate swaps 1	Derivative liabilities, at fair value	$	—	$	(1)
TBA and forward settling non-Agency securities	Derivative liabilities, at fair value	(48)		(15)
U.S. Treasury futures - short	Derivative liabilities, at fair value	—		(336)
SOFR futures contracts - long	Derivative liabilities, at fair value	(5)		(10)
Credit default swaps 1	Derivative liabilities, at fair value	—		—
Total derivative liabilities, at fair value		$	(53)	$	(362)

U.S. Treasury securities - long	U.S. Treasury securities, at fair value	$	2,570	$	1,540
U.S. Treasury securities - short	Obligation to return securities borrowed under reverse repurchase agreements, at fair value	(13,009)		(10,894)
Total U.S. Treasury securities, net at fair value		$	(10,439)	$	(9,354)

________________________________

1.As of September 30, 2024 and December 31, 2023, the net fair value of our interest rate swaps excluding the recognition of variation margin settlements as a direct reduction of carrying value (see Note 2) was a net asset (liability) of $1.4 billion and $2.9 billion, respectively. As of September 30, 2024 and December 31, 2023, the net fair value of our credit default swaps excluding the recognition of variation margin settlements was a net asset (liability) of $(7) million and $(6) million, respectively.

Schedule of Interest Rate Swaption Agreements Outstanding


Payer Swaptions	Option					Underlying Payer Swap
Current Option Expiration Date	Cost Basis		Fair Value		Average Months to Current Option Expiration Date	Notional Amount		Average Fixed Pay Rate 1	Average Term (Years)







December 31, 2023
≤ 1 year	$	28	$	86	5	$	1,250	2.61%	10.0

________________________________

1.Receive index references SOFR.


Receiver Swaptions	Option					Underlying Receiver Swap
Current Option Expiration Date	Cost Basis		Fair Value		Average Months to Current Option Expiration Date	Notional Amount		Average Fixed Receive Rate	Average Term (Years)
September 30, 2024
> 1 year ≤ 2 years	$	3	$	2	15	$	150	2.98%	5.0

December 31, 2023
≤ 1 year	$	3	$	3	24	$	150	2.98%	5.0

US government securities


U.S. Treasury Securities 1	September 30, 2024						December 31, 2023
Years to Maturity	Face Amount Long/(Short)		Cost Basis		Fair Value		Face Amount Long/(Short)		Cost Basis		Fair Value
≤ 5 years	$	2,451	$	2,464	$	2,493	$	1,408	$	1,419	$	1,454
> 5 year ≤ 7 years	(1,635)		(1,633)		(1,470)		(818)		(821)		(703)
> 7 year ≤ 10 years	(9,729)		(9,442)		(9,547)		(8,649)		(8,277)		(8,187)
> 10 years	(1,782)		(1,830)		(1,915)		(1,796)		(1,796)		(1,918)
Total U.S. Treasury securities	$	(10,695)	$	(10,441)	$	(10,439)	$	(9,855)	$	(9,475)	$	(9,354)

________________________________

1.As of September 30, 2024 and December 31, 2023, short U.S. Treasury securities totaling $(13.0) billion and $(10.9) billion, at fair value, respectively, had a weighted average yield of 3.69% and 3.64%, respectively. As of September 30, 2024 and December 31, 2023, long U.S. Treasury securities totaling $2.6 billion and $1.5 billion, at fair value, respectively, had a weighted average yield of 4.06% and 4.39%, respectively.

US Government Futures Securities [Table Text Block]


U.S. Treasury Futures	September 30, 2024								December 31, 2023
Years to Maturity	Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1		Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1

> 5 year ≤ 7 years	$	750	$	857	$	857	$	—	$	(2,714)	$	(2,961)	$	(3,064)	$	(103)
> 7 year ≤ 10 years	—		—		—		—		(2,924)		(3,294)		(3,451)		(157)
> 10 years	(791)		(986)		(983)		3		(791)		(913)		(989)		(76)
Total U.S. Treasury futures	$	(41)	$	(129)	$	(126)	$	3	$	(6,429)	$	(7,168)	$	(7,504)	$	(336)

________________________________

1.Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying U.S. Treasury security) of the U.S. Treasury futures contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

Summary of Long and Short Position of Derivative Instruments


	September 30, 2024								December 31, 2023
TBA Securities by Coupon	Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1		Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1
15-Year TBA securities:





≥ 5.0%	$	—	$	—	$	—	$	—	$	90	$	89	$	91	$	2
Total 15-Year TBA securities	—		—		—		—		90		89		91		2
30-Year TBA securities:
≤ 3.0%	(704)		(654)		(642)		12		(29)		(24)		(25)		(1)
3.5%	289		267		268		1		—		—		—		—
4.0%	(116)		(110)		(111)		(1)		—		—		—		—
4.5%	5,461		5,402		5,376		(26)		363		343		352		9
5.0%	3,865		3,841		3,865		24		1,717		1,704		1,704		—
5.5%	(3,902)		(3,950)		(3,948)		2		2,034		2,014		2,047		33
6.0%	(1,253)		(1,268)		(1,280)		(12)		20		10		21		11
≥ 6.5%	524		539		540		1		1,137		1,152		1,164		12
Total 30-Year TBA securities, net	4,164		4,067		4,068		1		5,242		5,199		5,263		64
Total TBA securities, net	$	4,164	$	4,067	$	4,068	$	1	$	5,332	$	5,288	$	5,354	$	66

________________________________

1.Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying Agency security) of the TBA contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

Schedule Of Outstanding Not Designated As Hedging Instruments

The following table summarizes changes in our derivative and other hedge portfolio and their effect on our consolidated statements of comprehensive income for the three and nine months ended September 30, 2024 and 2023 (in millions):


Derivative and Other Hedging Instruments	Beginning Notional Amount		Additions	Settlement, Termination, Expiration or Exercise	Ending Notional Amount		Gain/(Loss) on Derivative Instruments and Other Securities, Net 1
Three months ended September 30, 2024:
TBA securities, net	$	5,511	27,804	(29,151)	$	4,164	$	98

Interest rate swaps - payer	$	48,696	25	(9,575)	$	39,146	(1,036)

Credit default swaps - buy protection	$	(96)	—	—	$	(96)	(3)

Receiver swaptions	$	(150)	—	—	$	(150)	1
U.S. Treasury securities - short position	$	(13,999)	(3,983)	4,759	$	(13,223)	(509)
U.S. Treasury securities - long position	$	2,427	4,349	(4,248)	$	2,528	36
U.S. Treasury futures contracts - short position	$	(41)	(41)	41	$	(41)	(17)
							$	(1,430)

Three months ended September 30, 2023:
TBA securities, net	$	10,289	35,448	(43,386)	$	2,351	$	(148)

Interest rate swaps - payer	$	48,726	1,920	(5,250)	$	45,396	759
Interest rate swaps - receive, net	$	(1,000)	—	—	$	(1,000)	(6)
Credit default swaps - buy protection	$	(710)	(297)	836	$	(171)	—
Payer swaptions	$	1,600	—	(250)	$	1,350	89

U.S. Treasury securities - short position	$	(8,627)	(5,668)	4,161	$	(10,134)	537
U.S. Treasury securities - long position	$	1,543	1,499	(2,782)	$	260	(20)
U.S. Treasury futures contracts - short position	$	(5,900)	(10,070)	7,001	$	(8,969)	412
							$	1,623

Nine months ended September 30, 2024:
TBA securities, net	$	5,332	89,717	(90,885)	$	4,164	$	11

Interest rate swaps - payer	$	44,476	11,595	(16,925)	$	39,146	(199)
Interest rate swaps - receiver	$	(1,000)	—	1,000	$	—	(9)
Credit default swaps - buy protection	$	(96)	(96)	96	$	(96)	(6)
Payer swaptions	$	1,250	—	(1,250)	$	—	33
Receiver swaptions	$	(150)	—	—	$	(150)	1
U.S. Treasury securities - short position	$	(11,347)	(10,247)	8,371	$	(13,223)	(8)
U.S. Treasury securities - long position	$	1,492	7,690	(6,654)	$	2,528	(19)
U.S. Treasury futures contracts - short position	$	(6,429)	(4,007)	10,395	$	(41)	258
							$	62

Nine months ended September 30, 2023:
TBA securities, net	$	19,050	138,448	(155,147)	$	2,351	$	(172)

Interest rate swaps - payer	$	47,825	5,396	(7,825)	$	45,396	1,387
Interest rate swaps - receive, net	$	—	(1,000)	—	$	(1,000)	(9)
Credit default swaps - buy protection	$	(215)	(1,292)	1,336	$	(171)	(8)
Payer swaptions	$	3,050	—	(1,700)	$	1,350	49

U.S. Treasury securities - short position	$	(7,373)	(15,470)	12,709	$	(10,134)	614
U.S. Treasury securities - long position	$	357	11,786	(11,883)	$	260	(75)
U.S. Treasury futures contracts - short position	$	(9,213)	(23,185)	23,429	$	(8,969)	389
							$	2,175

________________________________

1.Amounts exclude other miscellaneous gains and losses and other interest income (expense) recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Additionally, as of September 30, 2024 and December 31, 2023, we held SOFR futures contracts with a long notional position of $1.0 billion and $0.9 billion, respectively, measured on a two-year swap equivalent basis. For the three and nine months ended September 30, 2024, we recognized a gain of $36 million and $23 million, respectively, and for the three and nine months ended September 30, 2023, we recognized a loss of and $(6) million and $(25) million, respectively, on our SOFR futures contracts in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Not Designated as Hedging Instrument [Member]

Derivative [Line Items]

Schedule Of Interest Rate Swap Agreement By Remaining Maturity

The following tables summarize certain characteristics of our derivative and other hedging instruments outstanding as of September 30, 2024 and December 31, 2023 (dollars in millions):


Pay Fixed / Receive Variable Interest Rate Swaps	September 30, 2024					December 31, 2023
Years to Maturity	Notional Amount		Average Fixed Pay Rate	Average Variable Receive Rate 1	Average Maturity (Years)	Notional Amount		Average Fixed Pay Rate	Average Variable Receive Rate 1	Average Maturity (Years)
≤ 1 years	$	7,750	0.13%	4.90%	0.8	$	13,750	0.14%	5.37%	0.4
> 1 to ≤ 3 years	11,300		0.22%	4.93%	1.9	15,800		0.17%	5.36%	2.0
> 3 to ≤ 5 years	3,800		0.25%	4.96%	4.2	5,800		0.24%	5.38%	3.9
> 5 to ≤ 7 years	4,150		2.15%	4.94%	6.0	3,900		0.92%	5.37%	6.2
> 7 to ≤ 10 years	12,146		3.51%	4.96%	9.0	5,226		3.06%	5.38%	9.2

Total	$	39,146	1.43%	4.94%	4.5	$	44,476	0.57%	5.37%	3.0

Stockholders' Equity (Preferred Stock) (Details) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended	9 Months Ended
	Feb. 11, 2020	Oct. 03, 2019	Mar. 06, 2019	Aug. 22, 2017	May 31, 2014	Sep. 30, 2024	Dec. 31, 2023	Sep. 14, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock E, Value, Issued		$ 390,000
Preferred Stock E, Liquidation Preference, Value		$ 403,000
Preferred Stock F, Value, Issued	$ 557,000
Preferred Stock D, Value, Issued						$ 227,000
Preferred Stock D, Liquidation Preference, Value						235,000
Preferred Stock C, Value, Issued						315,000
Preferred Stock C, Liquidation Preference, Value						325,000
Preferred Stock, Value, Issued						1,634,000	$ 1,634,000
Preferred Stock, Liquidation Preference, Value						$ 1,688,000	$ 1,688,000
Preferred Stock G, Value, Issued								$ 145,000
Preferred Stock, Shares Authorized						10,000,000.0
Series B Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Percent Interest Per Share					0.10%
Series C Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Capital Shares Reserved for Future Issuance						13,800
Preferred Stock, Dividend Rate, Percentage				7.00%
Preferred Stock Dividend Payment Rate Variable Rate Spread						5.111%
Preferred Stock, Liquidation Preference Per Share						$ 25.00
Preferred Stock, Shares Issued						13,000
Preferred Stock, Dividedn Rate, Percentage, Basis Spread						511.10%
Series D Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Capital Shares Reserved for Future Issuance						10,350
Preferred Stock, Dividend Rate, Percentage			6.875%
Preferred Stock Dividend Payment Rate Variable Rate Spread						4.332%
Preferred Stock, Shares Issued						9,400
Preferred Stock, Dividedn Rate, Percentage, Basis Spread						433.20%
Series E Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Capital Shares Reserved for Future Issuance						16,100
Preferred Stock, Dividend Rate, Percentage		6.50%
Preferred Stock, Shares Issued						16,100
Preferred Stock, Dividedn Rate, Percentage, Basis Spread						499.30%
Series F Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Capital Shares Reserved for Future Issuance						23,000
Preferred Stock, Dividend Rate, Percentage	6.125%
Preferred Stock, Shares Issued						23,000
Preferred Stock, Liquidation Preference, Value	$ 575,000
Preferred Stock, Dividedn Rate, Percentage, Basis Spread						469.70%
Series G Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Capital Shares Reserved for Future Issuance						6,900
Preferred Stock, Dividend Rate, Percentage						7.75%
Preferred Stock, Shares Issued						6,000
Preferred Stock, Liquidation Preference, Value								$ 150,000
Preferred Stock, Dividedn Rate, Percentage, Basis Spread						439.00%
Depositary Share [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued						67,500,000
Depositary Share [Member] \| Series C Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued						13,000,000.0
Depositary Share [Member] \| Series D Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued						9,400,000
Depositary Share [Member] \| Series E Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued		16,100,000
Depositary Share [Member] \| Series F Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued	23,000,000.0
Depositary Share [Member] \| Series G Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued								6,000,000.0

Organization	9 Months Ended
Organization	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization AGNC Investment Corp. (referred throughout this report as the "Company," "we," "us" and "our") was organized in Delaware on January 7, 2008 and commenced operations on May 20, 2008 following the completion of our initial public offering. Our common stock is traded on The Nasdaq Global Select Market under the symbol "AGNC." We are a leading provider of private capital to the U.S. housing market, enhancing liquidity in the residential real estate mortgage markets and, in turn, facilitating home ownership in the U.S. We invest primarily in Agency residential mortgage-backed securities ("Agency RMBS") for which the principal and interest payments are guaranteed by a U.S. Government-sponsored enterprise ("GSE") or a U.S. Government agency. We also invest in other types of mortgage and mortgage-related securities, such as credit risk transfer ("CRT") securities and non-Agency residential and commercial mortgage-backed securities ("non-Agency RMBS" and "CMBS," respectively), where repayment of principal and interest is not guaranteed by a GSE or U.S. Government agency, and other assets related to the housing, mortgage or real estate markets. We fund our investments primarily through collateralized borrowings structured as repurchase agreements. We operate to qualify to be taxed as a real estate investment trust ("REIT") under the Internal Revenue Code of 1986, as amended (the "Internal Revenue Code"). As a REIT, we are required to distribute annually 90% of our taxable income, and we will generally not be subject to U.S. federal or state corporate income tax to the extent that we distribute our annual taxable income to our stockholders on a timely basis. It is our intention to distribute 100% of our taxable income within the time limits prescribed by the Internal Revenue Code, which may extend into the subsequent tax year. We are internally managed with the principal objective of generating favorable long-term stockholder returns with a substantial yield component. We generate income from the interest earned on our investments, net of associated borrowing and hedging costs, and net realized gains and losses on our investment and hedging activities.

Pledged Assets Repurchase Agreements with Counterparties Greater than or Equal to 5% of Equity at Risk (Details) $ in Millions	Sep. 30, 2024 USD ($) days	Dec. 31, 2023 USD ($) days
Repurchase Agreements with Counterparties Greater than or equal to 5% of Equity at Risk [Line Items]
Securities Sold under Agreements to Repurchase \| $	$ 65,979	$ 50,426
Weighted Average Days to Maturity \| days	14	19
Risk Of Repurchase Agreement To Stockholders Equity	2.00%
FICC [Member]
Repurchase Agreements with Counterparties Greater than or equal to 5% of Equity at Risk [Line Items]
Risk Of Repurchase Agreement To Stockholders Equity	7.00%

- Definition

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-12A(Column A)(Footnote 2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480032/946-320-S99-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column A)(Footnote 2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480032/946-320-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480032/946-320-S99-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 4)(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480032/946-320-S99-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483466/210-20-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(m)(1)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(m)(1)(ii)(A)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483444/210-20-55-10

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

Label	Element	Value
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 1,771,000,000
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 2,334,000,000

Stockholders' Equity (Common Stock Repurchase Program) (Details) $ in Millions	Oct. 31, 2024 USD ($)
Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 1,000

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Derivative and Other Hedging Instruments (TBA Securities by Coupon and Issuer) (Details) - TBA and Forward Settling Agency Securities [Member] - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivative, Notional Amount	$ (4,164)	$ (5,511)	$ (5,332)	$ (2,351)	$ (10,289)	$ (19,050)
Cost Basis	(4,067)		(5,288)
Net long TBA position, at fair value	(4,068)		(5,354)
TBA, net carrying value	1		66
30 Year Maturity [Member]
Derivative [Line Items]
Derivative, Notional Amount	(4,164)		(5,242)
Cost Basis	(4,067)		(5,199)
Net long TBA position, at fair value	(4,068)		(5,263)
TBA, net carrying value	1		64
30 Year Maturity [Member] \| 6.5% Coupon
Derivative [Line Items]
Derivative, Notional Amount	(524)		(1,137)
Cost Basis	(539)		(1,152)
Net long TBA position, at fair value	(540)		(1,164)
TBA, net carrying value	1		12
30 Year Maturity [Member] \| 5.5% Coupon
Derivative [Line Items]
Derivative, Notional Amount			(2,034)
Cost Basis			(2,014)
Net long TBA position, at fair value			(2,047)
TBA, net carrying value	2		33
30 Year Maturity [Member] \| 5.0% Coupon
Derivative [Line Items]
Derivative, Notional Amount	(3,865)		(1,717)
Cost Basis	(3,841)		(1,704)
Net long TBA position, at fair value	(3,865)		(1,704)
TBA, net carrying value	24		0
30 Year Maturity [Member] \| 3.0% Coupon [Member]
Derivative [Line Items]
TBA, net carrying value	12		(1)
30 Year Maturity [Member] \| 3.5% Coupon [Member]
Derivative [Line Items]
Derivative, Notional Amount	(289)		0
Cost Basis	(267)		0
Net long TBA position, at fair value	(268)		0
TBA, net carrying value	1		0
30 Year Maturity [Member] \| 4.0% Coupon [Member]
Derivative [Line Items]
Derivative, Notional Amount			0
Cost Basis			0
Net long TBA position, at fair value			0
TBA, net carrying value	(1)		0
30 Year Maturity [Member] \| 4.5% Coupon [Member]
Derivative [Line Items]
Derivative, Notional Amount	(5,461)		(363)
Cost Basis	(5,402)		(343)
Net long TBA position, at fair value	(5,376)		(352)
TBA, net carrying value	(26)		9
30 Year Maturity [Member] \| 6.0% Coupon
Derivative [Line Items]
Derivative, Notional Amount			(20)
Cost Basis			(10)
Net long TBA position, at fair value			(21)
TBA, net carrying value	(12)		11
30 Year Maturity [Member] \| Short [Member] \| 5.5% Coupon
Derivative [Line Items]
Derivative, Notional Amount	(3,902)
Cost Basis	(3,950)
Net long TBA position, at fair value	(3,948)
30 Year Maturity [Member] \| Short [Member] \| 3.0% Coupon [Member]
Derivative [Line Items]
Derivative, Notional Amount	(704)		(29)
Cost Basis	(654)		(24)
Net long TBA position, at fair value	(642)		(25)
30 Year Maturity [Member] \| Short [Member] \| 4.0% Coupon [Member]
Derivative [Line Items]
Derivative, Notional Amount	(116)
Cost Basis	(110)
Net long TBA position, at fair value	(111)
30 Year Maturity [Member] \| Short [Member] \| 6.0% Coupon
Derivative [Line Items]
Derivative, Notional Amount	(1,253)
Cost Basis	(1,268)
Net long TBA position, at fair value	(1,280)
15 Year Maturity [Member]
Derivative [Line Items]
Derivative, Notional Amount	0		(90)
Cost Basis	0		(89)
Net long TBA position, at fair value	0		(91)
TBA, net carrying value	0		2
15 Year Maturity [Member] \| 5.0% Coupon
Derivative [Line Items]
Derivative, Notional Amount	0		(90)
Cost Basis	0		(89)
Net long TBA position, at fair value	0		(91)
TBA, net carrying value	$ 0		$ 2

Investment Securities (Summary Of Net Gain From Sale Of Agency Securities) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Cost of Sale of Fair Value Option Securities	$ (4,805,000)	$ (3,175,000)	$ (11,400,000)	$ (6,968,000)
Cost of Sale of Investment Securities	(4,805,000)	(3,175,000)	(11,400,000)	(7,386,000)
Proceeds from Sale of Debt Securities	4,911,000	2,641,000	11,300,000	6,516,000
Proceeds from Sale of Debt Securities, Trading	4,911,000	2,641,000	11,300,000	6,146,000
Proceeds from Sale of Debt Securities, Available-for-sale	0	0	0	370,000
Net gain (loss) on sale of investment securities	106,000	(534,000)	(100,000)	(870,000)
Principal Payments Received on Available-For-Sale securities	$ 444,000	547,000	$ 882,000	1,100,000
Weighted average coupon	5.01%		5.01%		4.85%
Available-for-sale Securities [Member]
Agency MBS sold, at cost	$ 0	0	$ 0	418,000
Net gain (loss) on sale of investment securities		0		(48,000)
Debt Securities, Available-for-sale, Realized Gain	0	0	0	0
Debt Securities, Available-for-sale, Realized Loss	0	0	0	48,000
Securities Remeasured at Fair Value [Member]
Net gain (loss) on sale of investment securities		(534,000)		(822,000)
Debt Securities, Available-for-sale, Realized Gain	106,000	4,000	126,000	15,000
Debt Securities, Available-for-sale, Realized Loss	0	538,000	226,000	837,000
Securities (Assets) [Member]
Net gain (loss) on sale of investment securities	106,000	(534,000)	(100,000)	(870,000)
Debt Securities, Available-for-sale, Realized Gain	106,000	4,000	126,000	15,000
Debt Securities, Available-for-sale, Realized Loss	0	$ 538,000	226,000	$ 885,000
Cost and Proceeds of Investment Securities [Member] \| Available-for-sale Securities [Member]
Net gain (loss) on sale of investment securities	0		0
Cost and Proceeds of Investment Securities [Member] \| Securities Remeasured at Fair Value [Member]
Net gain (loss) on sale of investment securities	106,000		(100,000)
Gross Gain & Loss of Investment Securities [Member] \| Available-for-sale Securities [Member]
Net gain (loss) on sale of investment securities	0		0
Gross Gain & Loss of Investment Securities [Member] \| Securities Remeasured at Fair Value [Member]
Net gain (loss) on sale of investment securities	$ 106,000		$ (100,000)
Non-Agency [Member] \| Interest-Only-Strip
Weighted average coupon	0.81%		0.81%		0.71%

Investment Securities (Summary Of Agency Securities Estimated Weighted Average Life Classifications) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Fair Value	$ 68,937	$ 54,824
Amortized Cost	$ 69,961	$ 56,965
Weighted Average Coupon	5.01%	4.85%
Weighted Average Yield	4.68%	4.41%
Less Than or Equal to Three Years [Member]
Fair Value	$ 6,517	$ 942
Amortized Cost	$ 6,440	$ 961
Weighted Average Coupon	6.21%	6.57%
Weighted Average Yield	5.71%	5.93%
Greater Than Three Years and Less Than or Equal to Five Years [Member]
Fair Value	$ 18,818	$ 10,381
Amortized Cost	$ 18,580	$ 10,331
Weighted Average Coupon	5.83%	5.94%
Weighted Average Yield	5.45%	5.52%
Greater Than Five Years [Member]
Fair Value	$ 40,879	$ 40,895
Amortized Cost	$ 42,219	$ 42,988
Weighted Average Coupon	4.52%	4.55%
Weighted Average Yield	4.17%	4.10%
Greater Than Ten Years [Member]
Fair Value	$ 2,723	$ 2,606
Amortized Cost	$ 2,722	$ 2,685
Weighted Average Coupon	4.19%	4.77%
Weighted Average Yield	4.70%	4.63%

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Assets:
Agency securities, at fair value (including pledged securities of $62,331 and $49,575, respectively)	$ 67,938	$ 53,673
Agency securities transferred to consolidated variable interest entities, at fair value (pledged securities)	106	121
Credit risk transfer securities, at fair value (including pledged securities of $588 and $678, respectively)	620	723
Non-Agency securities, at fair value, and other mortgage credit investments (including pledged securities of $224 and $262, respectively)	334	351
U.S. Treasury securities, at fair value (including pledged securities of $2,527 and $1,530, respectively)	2,570	1,540
Cash and cash equivalents	507	518
Restricted cash	1,279	1,253
Derivative assets, at fair value	157	185
Receivable for investment securities sold (including pledged securities of $1,612 and $0, respectively)	1,706	0
Receivable under reverse repurchase agreements	13,494	11,618
Goodwill and other intangible assets, net	526	526
Other assets	353	1,088
Total assets	89,590	71,596
Liabilities:
Repurchase Agreements	65,979	50,426
Debt of consolidated variable interest entities, at fair value	69	80
Payable for investment securities purchased	324	210
Derivative liabilities, at fair value	53	362
Dividends payable	134	115
Other liabilities	366	1,252
Total liabilities	79,934	63,339
Stockholders' equity:
Preferred Stock - aggregate liquidation preference of $1,688	1,634	1,634
Common stock - $0.01 par value; 1,500 shares authorized; 844.2 and 694.3 shares issued and outstanding, respectively	8	7
Additional paid-in capital	16,746	15,281
Retained deficit	(8,320)	(8,148)
Accumulated other comprehensive loss	(412)	(517)
Total stockholders' equity	9,656	8,257
Total liabilities and stockholders' equity	89,590	71,596
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 13,009	$ 10,894

Derivative and Other Hedging Instruments (Remaining Interest Rate Swap Term) (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) month	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) month
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (1,430)	$ 1,623	$ 62	$ 2,175
Interest Rate Swaps Linked to Overnight Index Swap Rate	18.00%		18.00%		20.00%
Interest Rate Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		89	$ 33	49
Interest Rate Swap [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (1,036)	759	(199)	1,387
Derivative Liability, Notional Amount	$ (39,146)		$ (39,146)		$ (44,476)
Average Fixed Pay Rate	1.43%		1.43%		0.57%
Average Maturity (Years)			4 years 6 months		3 years
Average Receive Rate	4.94%		4.94%		5.37%
Receiver Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 1		$ 1
Interest Rate Receive Swap
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		$ (6)	(9)	$ (9)
Less Than or Equal to One Year [Member] \| Interest Rate Swaption [Member]
Cost					$ 28
Fair Value					$ 86
Average Months to Expiration \| month					5
Derivative Liability, Notional Amount					$ (1,250)
Average Fixed Pay Rate					2.61%
Average Maturity (Years)					10 years
Less Than or Equal to One Year [Member] \| Interest Rate Swap [Member]
Derivative Liability, Notional Amount	$ (7,750)		$ (7,750)		$ (13,750)
Average Fixed Pay Rate	0.13%		0.13%		0.14%
Average Maturity (Years)			9 months 18 days		4 months 24 days
Average Receive Rate	4.90%		4.90%		5.37%
Less Than or Equal to One Year [Member] \| Receiver Swaption [Member]
Cost					$ 3
Fair Value					$ 3
Average Months to Expiration \| month					24
Derivative Liability, Notional Amount					$ (150)
Average Fixed Pay Rate					2.98%
Average Maturity (Years)					5 years
Greater Than One Year and Less Than or Equal to Two Years [Member] \| Receiver Swaption [Member]
Cost			$ 3
Fair Value	$ 2		$ 2
Average Months to Expiration \| month			15
Derivative Liability, Notional Amount	$ (150)		$ (150)
Average Fixed Pay Rate	2.98%		2.98%
Average Maturity (Years)			5 years
Greater Than One Year and Less Than or Equal to Three Years [Member] \| Interest Rate Swap [Member]
Derivative Liability, Notional Amount	$ (11,300)		$ (11,300)		$ (15,800)
Average Fixed Pay Rate	0.22%		0.22%		0.17%
Average Maturity (Years)			1 year 10 months 24 days		2 years
Average Receive Rate	4.93%		4.93%		5.36%
Greater Than One Year and Less Than or Equal to Three Years [Member] \| Interest Rate Receive Swap
Derivative Liability, Notional Amount	$ 0		$ 0		$ (1,000)
Average Fixed Pay Rate	0.00%		0.00%		5.38%
Average Maturity (Years)			0 years		1 year 6 months
Average Receive Rate	0.00%		0.00%		4.65%

Repurchase Agreements And Reverse Repurchase Agreements (Narrative) (Details) $ in Millions	Sep. 30, 2024 USD ($) days	Dec. 31, 2023 USD ($) days
Assets Sold under Agreements to Repurchase [Line Items]
Receivable Under Reverse Repurchase Agreements	$ 13,494	$ 11,618
Securities Sold under Agreements to Repurchase	65,979	50,426
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 13,009	$ 10,894
Short-term Debt, Weighted Average Interest Rate, at Point in Time	5.22%	5.60%
Debt of consolidated variable interest entities, at fair value	$ (69)	$ (80)
TBA securities Fifteen Year and Thirty Year Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Derivative, Fair Value, Net	1	66
TBA and Forward Settling Agency Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Derivative, Forward Settlement Value	4,067	5,288
Derivative, Fair Value, Net	1	66
Maturity Overnight [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	31,700	16,700
Forward Contracts [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 26,700	$ 8,800
Weighted Average Forward Start Days \| days	1	4
Short-term Debt, Weighted Average Interest Rate, at Point in Time	5.15%	5.54%
Bethesda Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Percentage of Repurchase Agreement Funding	50.00%	48.00%
FICC [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Percentage of Repurchase Agreement Funding	47.00%	43.00%
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 4,100	$ 3,100

Derivative and Other Hedging Instruments (Effect Of Derivative Instruments Not Designated As Hedges On Comprehensive Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Amount Gain/(Loss) Recognized in Income on Derivatives	$ (1,430)	$ 1,623	$ 62	$ 2,175
Interest Rate Swaption [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	0	(1,350)	0	(1,350)		$ (1,250)	$ (1,600)
Additions		0	0	0
Settlement, Expirations or Exercise		250	1,250	1,700
Amount Gain/(Loss) Recognized in Income on Derivatives		89	33	49
TBA and Forward Settling Agency Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(4,164)	(2,351)	(4,164)	(2,351)	$ (5,511)	(5,332)	(10,289)	$ (19,050)
Additions	(27,804)	(35,448)	(89,717)	(138,448)
Settlement, Expirations or Exercise				155,147
Amount Gain/(Loss) Recognized in Income on Derivatives	98	(148)	11	(172)
Purchases Of TBAs And Forward Settling Agency Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Settlement, Expirations or Exercise	29,151	43,386	90,885
Interest Rate Swap [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Additions	(25)	(1,920)	(11,595)	(5,396)
Settlement, Expirations or Exercise	9,575	5,250	16,925	7,825
Notional Amount	(39,146)		(39,146)
Amount Gain/(Loss) Recognized in Income on Derivatives	(1,036)	759	(199)	1,387
US Treasury Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Amount Gain/(Loss) Recognized in Income on Derivatives	(17)	412	258	389
Receiver Swaption [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(150)		(150)		(150)	(150)
Additions	0		0
Settlement, Expirations or Exercise	0		0
Amount Gain/(Loss) Recognized in Income on Derivatives	1		1
Credit Default Swap, Buying Protection
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(96)		(96)			(95)
Additions	0	(297)	(96)	(1,292)
Settlement, Expirations or Exercise	0	836	96	1,336
Amount Gain/(Loss) Recognized in Income on Derivatives	(3)	0	(6)	(8)
SOFR Futures Contracts
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(1,000)		(1,000)			(900)
Interest Rate Receive Swap
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Additions		0	0	(1,000)
Settlement, Expirations or Exercise		0	1,000	0
Amount Gain/(Loss) Recognized in Income on Derivatives		(6)	(9)	(9)
Not Designated as Hedging Instrument [Member] \| Interest Rate Swaption [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount								(3,050)
Not Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(39,146)	(45,396)	(39,146)	(45,396)	(48,696)	(44,476)	(48,726)	(47,825)
Not Designated as Hedging Instrument [Member] \| Credit Default Swap, Buying Protection
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(96)	(171)	(96)	(171)	(96)	(96)	(710)	(215)
Not Designated as Hedging Instrument [Member] \| Interest Rate Receive Swap
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	0	(1,000)	0	(1,000)		(1,000)	(1,000)	0
Short [Member] \| US Treasury Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(13,223)	(10,134)	(13,223)	(10,134)	(13,999)	(11,347)	(8,627)	(7,373)
Additions	(3,983)	(5,668)	(10,247)	(15,470)
Settlement, Expirations or Exercise	4,759	4,161	8,371	12,709
Amount Gain/(Loss) Recognized in Income on Derivatives	(509)	537	(8)	614
Long [Member] \| US Treasury Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Amount Gain/(Loss) Recognized in Income on Derivatives	36	(20)	(19)	(75)
Debt Securities, Trading, and Equity Securities, FV-NI	2,528	260	2,528	260	2,427	1,492	1,543	357
Trading Securities Added During the Period	4,349	1,499	7,690	11,786
Notional Amount Of Trading Securities Settlement Expiration During The Period	(4,248)	(2,782)	(6,654)	(11,883)
Long [Member] \| SOFR Futures Contracts
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Amount Gain/(Loss) Recognized in Income on Derivatives	36	(6)	23	(25)
Future [Member] \| Short [Member] \| US Treasury Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(41)	(8,969)	(41)	(8,969)	$ (41)	$ (6,429)	$ (5,900)	$ (9,213)
Additions	(41)	(10,070)	4,007	(23,185)
Settlement, Expirations or Exercise	$ 41	$ 7,001	$ (10,395)	$ 23,429

Fair Value Measurements

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

The following table provides a summary of our assets and liabilities that are measured at fair value on a recurring basis, as of September 30, 2024 and December 31, 2023, based on their categorization within the valuation hierarchy (in millions). There were no transfers between valuation hierarchy levels during the periods presented in our accompanying consolidated statements of comprehensive income.


	September 30, 2024						December 31, 2023
	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets:
Agency securities	$	—	$	67,938	$	—	$	—	$	53,673	$	—
Agency securities transferred to consolidated VIEs	—		106		—		—		121		—
Credit risk transfer securities	—		620		—		—		723		—
Non-Agency securities	—		273		—		—		307		—
U.S. Treasury securities	2,570		—		—		1,540		—		—
Interest rate swaps 1	—		96		—		—		15		—
Swaptions	—		2		—		—		89		—
TBA securities	—		49		—		—		81		—
SOFR Futures	7		—		—		—		—		—
U.S. Treasury futures	3		—		—		—		—		—
Total	$	2,580	$	69,084	$	—	$	1,540	$	55,009	$	—
Liabilities:
Debt of consolidated VIEs	$	—	$	69	$	—	$	—	$	80	$	—
Obligation to return U.S. Treasury securities borrowed under reverse repurchase agreements	13,009		—		—		10,894		—		—
Interest rate swaps 1	—		—		—		—		1		—
Credit default swaps 1	—		—		—		—		—		—
TBA securities	—		48		—		—		15		—
U.S. Treasury futures	—		—		—		336		—		—
SOFR Futures	5		—		—		10		—		—
Total	$	13,014	$	117	$	—	$	11,240	$	96	$	—

________________________________

1.As of September 30, 2024 and December 31, 2023, the net fair value of our interest rate swaps excluding the recognition of variation margin settlements as a direct reduction of carrying value was a net asset (liability) of $1.4 billion and $2.9 billion, respectively, based on "Level 2" inputs. As of September 30, 2024 and December 31, 2023, the net fair value of our credit default swaps excluding the recognition of variation margin settlements was a net asset (liability) of $(7) million and $(6) million, respectively, based on "Level 2" inputs. See Notes 2 and 5 for additional details.

Excluded from the table above are financial instruments reported at cost and other mortgage credit investments reported under the equity method of accounting in our consolidated financial statements. As of September 30, 2024 and December 31, 2023, the fair value of our repurchase agreements approximated cost, as the rates on our outstanding repurchase agreements largely corresponded to prevailing rates observed in the repo market. The fair value of cash and cash equivalents, restricted cash, receivables and other payables were determined to approximate cost as of such dates due to their short duration. We estimate the fair value of these instruments carried at cost using "Level 1" or "Level 2" inputs. As of September 30, 2024 and December 31, 2023, the carrying value of other mortgage credit investments reported under the equity method of accounting was $61 million and $44 million, respectively.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Pledged Assets (Assets Pledged from Counterparties) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Offsetting Assets and Liabilities [Line Items]
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 13,009,000	$ 10,894,000
Restricted Cash and Cash Equivalents	1,279,000	1,253,000	$ 1,389,000
Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted Cash and Cash Equivalents	23,000	138,000
Restricted Cash and Securities Pledged	13,387,000	12,111,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	0	(306,000)
Restricted Cash and Cash Equivalents	21,000	49,000
Securities Sold under Agreements to Repurchase [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	(51,000)	(355,000)
Derivative [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted Cash and Securities Pledged	2,000	89,000
US Treasury Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Securities Received as Collateral, Amount Repledged and Sold	33,000	397,000
US Treasury Securities [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	(13,334,000)	(11,973,000)
Reverse Repurchase Agreements [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	(13,334,000)	(11,667,000)
Agency Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	(62,331,000)	(49,575,000)
Agency Securities [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	(30,000)
Reverse Repurchase Agreements [Member] \| US Treasury Securities [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	(13,334,000)	(11,667,000)
Derivative [Member] \| US Treasury Securities [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	0	0
Repurchase Agreements [Member] \| Agency Securities [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	(30,000)
Derivative [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted Cash and Cash Equivalents	2,000	89,000
Reverse Repurchase Agreements [Member] \| Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted Cash and Cash Equivalents	$ 0	$ 0

Stockholders' Equity (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	$ 200	$ (213)	$ 105	$ (136)
Agency Securities [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning OCI Balance	(612)	(595)	(517)	(672)
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	200	(213)	105	(184)
Amounts reclassified from accumulated OCI	0	0	0	48
Ending OCI Balance	$ (412)	$ (808)	$ (412)	$ (808)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2024

Equity [Abstract]

Preferred Stock [Table Text Block]


Cumulative Redeemable Preferred Stock 1	Issue Date	Depositary Shares Issued and Outstanding	Carrying Value		Aggregate Liquidation Preference		Per Annum Dividend Rate 2,3	First Optional Redemption Date / Conversion Date 3,4
Fixed-to-Floating Rate:
Series C	August 22, 2017	13.0	$	315	$	325	10.65872%	October 15, 2022
Series D	March 6, 2019	9.4	227		235		9.87972%	April 15, 2024
Series E	October 3, 2019	16.1	390		403		6.500%	October 15, 2024
Series F	February 11, 2020	23.0	557		575		6.125%	April 15, 2025
Fixed-Rate Reset:
Series G	September 14, 2022	6.0	145		150		7.750%	October 15, 2027
Total		67.5	$	1,634	$	1,688

________________________________

2.The Series C and D per annum dividend rates represent the rates in effect as of September 30, 2024.

4.Shares may be redeemed prior to our optional redemption date under certain circumstances intended to preserve our qualification as a REIT for U.S federal income tax purposes.

Schedule of Stock by Class [Table Text Block]

During the three and nine months ended September 30, 2024, we sold 78.1 million and 149.0 million shares, respectively, of our common stock under the sales agreements for proceeds of $781 million and $1,456 million, respectively, or $10.00 and $9.78 per common share, respectively, net of offering costs. As of September 30, 2024, shares of our common stock with an aggregate offering price of $189 million remained authorized for issuance under this program through December 31, 2025. See Note 10. Subsequent Events for additional information regarding our At-the-Market Offering Program.

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table summarizes changes to accumulated OCI for the three and nine months ended September 30, 2024 and 2023 (in millions):


	Three Months Ended September 30,				Nine Months Ended September 30,
Accumulated Other Comprehensive Income (Loss)	2024		2023		2024		2023
Beginning Balance	$	(612)	$	(595)	$	(517)	$	(672)
OCI before reclassifications	200		(213)		105		(184)
Net loss amounts for available-for-sale securities reclassified from accumulated OCI to realized gain (loss) on sale of investment securities, net	—		—		—		48
Ending Balance	$	(412)	$	(808)	$	(412)	$	(808)

- Definition

Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding.

+ References

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+ Details

Repurchase Agreements And Other Debt (Repurchase Arrangements And Weighted Average Interest Rates Classified By Original Maturities) (Details) $ in Millions	Sep. 30, 2024 USD ($) days	Dec. 31, 2023 USD ($) days
Receivable Under Reverse Repurchase Agreements	$ 13,494	$ 11,618
Repurchase Agreements	$ 65,979	$ 50,426
Weighted Average Interest Rate	5.22%	5.60%
Weighted Average Days to Maturity \| days	14	19
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 13,009	$ 10,894
Maturity Overnight [Member]
Repurchase Agreements	31,700	16,700
30 Days or Less [Member]
Repurchase Agreements	$ 53,118	$ 40,946
Weighted Average Interest Rate	5.26%	5.61%
Weighted Average Days to Maturity \| days	8	11
1 to 3 Months
Repurchase Agreements	$ 9,904	$ 7,933
Weighted Average Interest Rate	5.08%	5.55%
Weighted Average Days to Maturity \| days	51	64
3 to 6 Months
Repurchase Agreements	$ 377	$ 0
Weighted Average Interest Rate	4.86%	0.00%
Weighted Average Days to Maturity \| days	95	0
US Treasury Securities [Member] \| 2 Days to 1 Month [Member]
Repurchase Agreements	$ 2,580	$ 1,547
Weighted Average Interest Rate	5.06%	5.54%
Weighted Average Days to Maturity \| days	1	2
FICC [Member]
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 4,100	$ 3,100
US Government Agencies Debt Securities [Member]
Repurchase Agreements	$ 63,399	$ 48,879
Weighted Average Interest Rate	5.23%	5.60%
Weighted Average Days to Maturity \| days	15	19

Derivative and Other Hedging Instruments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Interest Rate Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		$ 89,000	$ 33,000	$ 49,000
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period		0	0	0
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period		(250,000)	(1,250,000)	(1,700,000)
Derivative, Notional Amount	$ 0	1,350,000	0	1,350,000		$ 1,250,000	$ 1,600,000
TBA and Forward Settling Agency Securities [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	98,000	(148,000)	11,000	(172,000)
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	27,804,000	35,448,000	89,717,000	138,448,000
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period				(155,147,000)
Derivative Asset, Fair Value, Gross Asset	4,068,000		4,068,000			5,354,000
Derivative, Fair Value, Net	1,000		1,000			66,000
Derivative, Notional Amount	4,164,000	2,351,000	4,164,000	2,351,000	$ 5,511,000	5,332,000	10,289,000	$ 19,050,000
US Treasury Securities [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(17,000)	412,000	258,000	389,000
Derivative, Fair Value, Net	3,000		3,000			(336,000)
Credit Default Swap
Derivative, Fair Value, Net	(7,000)		(7,000)			(6,000)
Credit Default Swap, Buying Protection
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(3,000)	0	(6,000)	(8,000)
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	0	297,000	96,000	1,292,000
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	0	(836,000)	(96,000)	(1,336,000)
Derivative, Notional Amount	96,000		96,000			95,000
SOFR Futures Contracts
Derivative assets, at fair value	(7,000)		(7,000)			0
Derivative, Notional Amount	1,000,000		1,000,000			900,000
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(1,430,000)	1,623,000	62,000	2,175,000
Derivative assets, at fair value	157,000		157,000			185,000
Not Designated as Hedging Instrument [Member] \| Interest Rate Swaption [Member]
Derivative, Notional Amount								3,050,000
Not Designated as Hedging Instrument [Member] \| Credit Default Swap, Buying Protection
Derivative, Notional Amount	96,000	171,000	96,000	171,000	96,000	96,000	710,000	215,000
Short [Member] \| US Treasury Securities [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(509,000)	537,000	(8,000)	614,000
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	3,983,000	5,668,000	10,247,000	15,470,000
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	(4,759,000)	(4,161,000)	(8,371,000)	(12,709,000)
Derivative Asset, Fair Value, Gross Asset	126,000		126,000			7,504,000
Derivative, Notional Amount	13,223,000	10,134,000	13,223,000	10,134,000	13,999,000	11,347,000	8,627,000	7,373,000
Long [Member] \| US Treasury Securities [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	36,000	(20,000)	(19,000)	(75,000)
Trading Securities Added During the Period	4,349,000	1,499,000	7,690,000	11,786,000
Notional Amount Of Trading Securities Settlement Expiration During The Period	(4,248,000)	(2,782,000)	(6,654,000)	(11,883,000)
Debt Securities, Trading, and Equity Securities, FV-NI	2,528,000	260,000	2,528,000	260,000	$ 2,427,000	$ 1,492,000	$ 1,543,000	$ 357,000
Long [Member] \| SOFR Futures Contracts
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 36,000	$ (6,000)	$ 23,000	$ (25,000)

Summary of Significant Accounting Policies	9 Months Ended
Summary of Significant Accounting Policies	Sep. 30, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation Our accompanying consolidated financial statements and related notes have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X. The accompanying consolidated financial statements and related notes are unaudited and include the accounts of all our wholly-owned subsidiaries and variable interest entities for which we are the primary beneficiary. Significant intercompany accounts and transactions have been eliminated. The accompanying consolidated financial statements and related notes should be read in conjunction with the audited consolidated financial statements included in our most recent Annual Report on Form 10-K for the fiscal year ended December 31, 2023. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. In the opinion of management, all adjustments, consisting solely of normal recurring accruals, necessary for the fair presentation of consolidated financial statements for the interim period have been included. The current period’s results of operations are not necessarily indicative of results that ultimately may be achieved for the year. Investment Securities Agency RMBS consist of residential mortgage pass-through securities and collateralized mortgage obligations ("CMOs") guaranteed by the Federal National Mortgage Association ("Fannie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac," and together with Fannie Mae, the "GSEs") or the Government National Mortgage Association ("Ginnie Mae"). CRT securities are risk sharing instruments issued by the GSEs, and similarly structured transactions issued by third-party market participants, that synthetically transfer a portion of the risk associated with credit losses within pools of conventional residential mortgage loans from the GSEs and/or third parties to private investors. Unlike Agency RMBS, full repayment of the original principal balance of CRT securities is not guaranteed by a GSE or U.S. Government agency; rather, "credit risk transfer" is achieved by writing down the outstanding principal balance of the CRT securities if credit losses on a related pool of loans exceed certain thresholds. By reducing the amount that they are obligated to repay to holders of CRT securities, the GSEs and/or other third parties offset credit losses on the related loans. Non-Agency RMBS and CMBS (together, "Non-Agency MBS") are backed by residential and commercial mortgage loans, respectively, packaged and securitized by a private institution, such as a commercial bank. Non-Agency MBS typically benefit from credit enhancements derived from structural elements, such as subordination, over-collateralization or insurance, but nonetheless carry a higher level of credit exposure than Agency RMBS. All of our securities are reported at fair value on our consolidated balance sheet. Accounting Standards Codification ("ASC") Topic 320, Investments—Debt and Equity Securities, requires that at the time of purchase, we designate a security as held-to-maturity, available-for-sale or trading, depending on our ability and intent to hold such security to maturity. Alternatively, we may elect the fair value option of accounting for securities pursuant to ASC Topic 825, Financial Instruments. Prior to fiscal year 2017, we primarily designated our investment securities as available-for-sale. On January 1, 2017, we began electing the fair value option of accounting for all investment securities newly acquired after such date. Unrealized gains and losses on securities classified as available-for-sale are reported in accumulated other comprehensive income ("OCI"), whereas unrealized gains and losses on securities for which we elected the fair value option, or are classified as trading, are reported in net income through other gain (loss). Upon the sale of a security designated as available-for-sale, we determine the cost of the security and the amount of unrealized gain or loss to reclassify out of accumulated OCI into earnings based on the specific identification method. In our view, the election of the fair value option simplifies the accounting for investment securities and more appropriately reflects the results of our operations for a reporting period by presenting the fair value changes for these assets in a manner consistent with the presentation and timing of the fair value changes for our derivative instruments. We generally recognize gains or losses through net income on available-for-sale securities only if the security is sold; however, if the fair value of a security declines below its amortized cost and we determine that it is more likely than not that we will incur a realized loss on the security when we sell the asset, we will recognize the difference between the amortized cost and the fair value in net income as a component of other gain (loss). We did not recognize any loss on available for sale securities through net income that we held as of September 30, 2024 because, as of such date, we neither intended to sell any securities in an unrealized loss position nor was it more likely than not that we would be required to sell such securities before recovery of their amortized cost basis. Since all of our available-for-sale designated securities consist of Agency RMBS, we do not have an allowance for credit losses. We have not recognized impairment losses on our available-for-sale securities through net income for the periods presented in our consolidated financial statements. Interest Income Interest income is accrued based on the outstanding principal amount of the investment securities and their contractual terms. Premiums or discounts associated with the purchase of Agency RMBS and non-Agency MBS of high credit quality are amortized or accreted into interest income, respectively, over the projected lives of the securities, including contractual payments and estimated prepayments, using the effective interest method in accordance with ASC Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs. We estimate long-term prepayment speeds of our mortgage securities using a third-party service and market data. The third-party service provider estimates prepayment speeds using models that incorporate the forward yield curve, primary to secondary mortgage rate spreads, current mortgage rates, mortgage rates of the outstanding loans, age and size of the outstanding loans, loan-to-value ratios, interest rate volatility and other factors. We review the prepayment speeds estimated by the third-party service for reasonableness with consideration given to both historical prepayment speeds and current market conditions. If based on our assessment, we believe that the third-party model does not fully reflect our expectations of the current prepayment landscape we may make adjustments to the models. We review our actual and anticipated prepayment experience on at least a quarterly basis and effective yields are recalculated when differences arise between (i) our previous estimate of future prepayments and (ii) actual prepayments to date and our current estimate of future prepayments. We are required to record an adjustment in the current period to premium amortization / discount accretion for the cumulative effect of the difference in the effective yields as if the recalculated yield had been in place as of the security's acquisition date through the reporting date. At the time we purchase CRT securities and non-Agency MBS that are not of high credit quality, we determine an effective yield based on our estimate of the timing and amount of future cash flows and our cost basis. Our initial cash flow estimates for these investments are based on our observations of current information and events and include assumptions related to interest rates, prepayment rates, collateral call provisions, and the impact of default and severity rates on the timing and amount of credit losses. On at least a quarterly basis, we review the estimated cash flows and make appropriate adjustments based on inputs and analysis received from external sources, internal models, and our judgment regarding such inputs and other factors. Any resulting changes in effective yield are recognized prospectively based on the current amortized cost of the investment adjusted for credit impairments, if any. Repurchase Agreements We finance the acquisition of securities for our investment portfolio primarily through repurchase agreements with our lending counterparties. Repurchase arrangements involve the sale and a simultaneous agreement to repurchase the securities at a future date. We maintain a beneficial interest in the specific securities pledged during the term of each repurchase arrangement and we receive the related principal and interest payments. Pursuant to ASC Topic 860, Transfers and Servicing, we account for repurchase agreements as collateralized financing transactions, which are carried at their contractual amounts (cost), plus accrued interest. Our repurchase agreements typically have maturities of less than one year. Reverse Repurchase Agreements and Obligation to Return Securities Borrowed under Reverse Repurchase Agreements We borrow securities to cover short sales of U.S. Treasury securities through reverse repurchase transactions under our master repurchase agreements (see Derivative Instruments below). We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on the balance sheet based on the value of the underlying borrowed securities as of the reporting date. We may also enter into reverse repurchase agreements to earn a yield on excess cash balances. The securities received as collateral in connection with our reverse repurchase agreements mitigate our credit risk exposure to counterparties. Our reverse repurchase agreements typically have maturities of 30 days or less. Derivative Instruments We use a variety of derivative instruments to hedge a portion of our exposure to market risks, including interest rate, prepayment, extension and liquidity risks. The objective of our risk management strategy is to reduce fluctuations in net book value over a range of interest rate scenarios. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing during a period of rising interest rates. The primary instruments that we use are interest rate swaps, options to enter into interest rate swaps ("swaptions"), U.S. Treasury securities and U.S. Treasury futures contracts. We also use forward contracts in the Agency RMBS "to-be-announced" market, or TBA securities, to invest in and finance Agency securities and to periodically reduce our exposure to Agency RMBS. We account for derivative instruments in accordance with ASC Topic 815, Derivatives and Hedging ("ASC 815"). ASC 815 requires an entity to recognize all derivatives as either assets or liabilities in our accompanying consolidated balance sheets and to measure those instruments at fair value. None of our derivative instruments have been designated as hedging instruments for accounting purposes under the provisions of ASC 815, consequently changes in the fair value of our derivative instruments are reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Our derivative agreements generally contain provisions that allow for netting or setting off derivative assets and liabilities with the counterparty; however, we report related assets and liabilities on a gross basis in our consolidated balance sheets. Derivative instruments in a gain position are reported as derivative assets at fair value and derivative instruments in a loss position are reported as derivative liabilities at fair value in our consolidated balance sheets. Changes in fair value of derivative instruments and periodic settlements related to our derivative instruments are recorded in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Net cash receipts from and payments on our derivative instruments are classified in our consolidated statements of cash flows according to the underlying nature or purpose of the derivative transaction, generally in the investing section. Interest rate swap agreements We use interest rate swaps to economically hedge the variable cash flows associated with our borrowings made under repurchase agreements. Under our interest rate swap agreements, we typically pay a fixed rate and receive a floating rate ("payer swaps") based on a short-term benchmark rate, such as the Secured Overnight Financing Rate ("SOFR") and Overnight Index Swap Rate ("OIS"). Our interest rate swaps typically have terms from one to 10 years. Our interest rate swaps are centrally cleared through a registered commodities exchange. The clearing exchange requires that we post an "initial margin" amount determined by the exchange. The initial margin amount is intended to be set at a level sufficient to protect the exchange from the interest rate swap's maximum estimated single-day price movement and is subject to adjustment based on changes in market volatility and other factors. We also exchange daily settlements of "variation margin" based upon changes in fair value, as measured by the exchange. Pursuant to rules governing central clearing activities, we recognize variation margin settlements as a direct reduction of the carrying value of the interest rate swap asset or liability. Interest rate swaptions We purchase interest rate swaptions to help mitigate the potential impact of larger, more rapid changes in interest rates on the performance of our investment portfolio. Interest rate swaptions provide us the option to enter into an interest rate swap agreement for a predetermined notional amount, stated term and pay and receive interest rates in the future. Our interest rate swaption agreements are not subject to central clearing. The difference between the premium paid and the fair value of the swaption is reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. If a swaption expires unexercised, the realized loss on the swaption would be equal to the premium paid. If we sell or exercise a swaption, the realized gain or loss on the swaption would be equal to the difference between the cash or the fair value of the underlying interest rate swap and the premium paid. TBA securities A TBA security is a forward contract for the purchase or sale of Agency RMBS at a predetermined price, face amount, issuer, coupon and stated maturity on an agreed-upon future date. The specific Agency RMBS to be delivered into the contract are not known until shortly before the settlement date. We may choose, prior to settlement, to move the settlement of these securities out to a later date by entering into an offsetting TBA position, net settling the offsetting positions for cash, and simultaneously purchasing or selling a similar TBA contract for a later settlement date (together referred to as a "dollar roll transaction"). The Agency securities purchased or sold for a forward settlement date are typically priced at a discount to equivalent securities settling in the current month. This difference, or "price drop," is the economic equivalent of interest income on the underlying Agency securities, less an implied funding cost, over the forward settlement period (referred to as "dollar roll income"). Consequently, forward purchases of Agency securities and dollar roll transactions represent a form of off-balance sheet financing. We account for TBA contracts as derivative instruments since either the TBA contracts do not settle in the shortest period of time possible or we cannot assert that it is probable at inception and throughout the term of the TBA contract that we will physically settle the contract on the settlement date. We account for TBA dollar roll transactions as a series of derivative transactions. U.S. Treasury securities and US Treasury futures contracts We use U.S. Treasury securities and U.S. Treasury futures contracts to mitigate the potential impact of changes in interest rates on the performance of our portfolio. We enter into short-sales of U.S. Treasury securities by borrowing the securities under reverse repurchase agreements and selling them into the market. We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on our accompanying consolidated balance sheets based on the value of the underlying U.S. Treasury security as of the reporting date. Treasury futures contracts are standardized contracts that obligate us to sell or buy U.S. Treasury securities for future delivery. Gains and losses associated with U.S. Treasury securities and U.S. Treasury futures contracts are recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Fair Value Measurements We determine the fair value of financial instruments based on our estimate of the price that would be received to sell the asset or paid to transfer the liability in an orderly transaction between market participants at the measurement date. We utilize a three-level valuation hierarchy for disclosure of fair value measurements based upon the transparency of inputs to the valuation of the instrument as of the measurement date. We categorize a financial instrument within the hierarchy based upon the lowest level of input that is significant to the fair value measurement. The three levels of valuation hierarchy are defined as follows: •Level 1 Inputs —Quoted prices (unadjusted) for identical unrestricted assets and liabilities in active markets that are accessible at the measurement date. •Level 2 Inputs —Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable. •Level 3 Inputs —Instruments with primarily unobservable market data that cannot be corroborated. The majority of our financial instruments are classified as Level 2 inputs. The availability of observable inputs can be affected by a wide variety of factors, including the type of instrument, whether the instrument is new and not yet established in the marketplace and other characteristics particular to the instrument. We typically obtain price estimates from multiple third- party pricing sources, such as pricing services and dealers, or, if applicable, from the registered clearing exchange. We make inquiries of third-party pricing sources to understand the significant inputs and assumptions they used to determine their prices and that they are derived from orderly transactions, particularly during periods of elevated market turbulence and reduced market liquidity. We also review third-party price estimates and perform procedures to validate their reasonableness, including an analysis of the range of estimates for each position, comparison to recent trade activity for similar securities and for consistency with market conditions observed as of the measurement date. While we do not adjust prices we obtain from pricing sources, we will exclude prices for securities from our estimation of fair value if we determine based on our validation procedures and our market knowledge and expertise that the price is significantly different from what observable market data would indicate and we cannot obtain an understanding from the third-party source as to the significant inputs used to determine the price. The following is a description of the valuation methodologies used for financial instruments measured at fair value on a recurring basis classified as Level 2 inputs. These instruments trade in active markets such that participants transact with sufficient frequency and volume to provide transparent pricing information on an ongoing basis. The liquidity of these markets and the similarity of our instruments to those actively traded enable our pricing sources and us to utilize the observed quoted prices as a basis for formulating fair value measurements. Investment securities - are valued based on prices obtained from multiple third-party pricing sources. The pricing sources utilize various valuation approaches, including market and income approaches. For Agency RMBS, the pricing sources primarily utilize a matrix pricing technique that interpolates the estimated fair value based on observed quoted prices for TBA securities having the same coupon, maturity and issuer, adjusted to reflect the specific characteristics of the pool of mortgages underlying the Agency security, such as maximum loan balance, loan vintage, loan-to-value ratio, geography and other characteristics as may be appropriate. For other investment securities, the pricing sources primarily utilize discounted cash flow model-derived pricing techniques to estimate the fair value. Such models incorporate market-based discount rate assumptions based on observable inputs such as recent trading activity, credit data, volatility statistics, benchmark interest rate curves, spread measurements to benchmark curves and other market data that are current as of the measurement date and may include certain unobservable inputs, such as assumptions of future levels of prepayment, defaults and loss severities. TBA securities - are valued using prices obtained from third-party pricing sources based on pricing models that reference recent trading activity. Interest rate swaps - are valued using the daily settlement price, or fair value, determined by the clearing exchange based on a pricing model that references observable market inputs, including current benchmark rates and the forward yield curve. Interest rate swaptions - are valued using prices obtained from the counterparty and other third-party pricing models. The pricing models are based on the value of the future interest rate swap that we have the option to enter into as well as the remaining length of time that we have to exercise the option based on observable market inputs, adjusted for non-performance risk, if any. U.S. Treasury securities and futures are valued based on quoted prices for identical instruments in active markets and are classified as Level 1 assets. None of our financial instruments are classified as Level 3 inputs. Recent Accounting Pronouncements We consider the applicability and impact of all ASUs issued by the FASB. There are no unadopted ASUs that are expected to have a significant impact on our consolidated financial statements when adopted or other recently adopted ASUs that had a significant impact on our consolidated financial statements upon adoption.
Basis of Accounting	Basis of Presentation Our accompanying consolidated financial statements and related notes have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X. The accompanying consolidated financial statements and related notes are unaudited and include the accounts of all our wholly-owned subsidiaries and variable interest entities for which we are the primary beneficiary. Significant intercompany accounts and transactions have been eliminated. The accompanying consolidated financial statements and related notes should be read in conjunction with the audited consolidated financial statements included in our most recent Annual Report on Form 10-K for the fiscal year ended December 31, 2023. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. In the opinion of management, all adjustments, consisting solely of normal recurring accruals, necessary for the fair presentation of consolidated financial statements for the interim period have been included. The current period’s results of operations are not necessarily indicative of results that ultimately may be achieved for the year.

Subsequent Event (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Feb. 11, 2020	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Oct. 31, 2024	Dec. 31, 2023	Oct. 03, 2019
Subsequent Event [Line Items]
Preferred Stock, Liquidation Preference, Value		$ 1,688,000		$ 1,688,000			$ 1,688,000
Preferred Stock D, Value, Issued		227,000		227,000
Preferred Stock E, Value, Issued								$ 390,000
Preferred Stock E, Liquidation Preference, Value								$ 403,000
Dividends, Preferred Stock, Cash		$ 33,000	$ 31,000	$ 96,000	$ 92,000
Common Stock, Dividends, Per Share, Declared		$ 0.36	$ 0.36	$ 1.08	$ 1.08
Stock Issued During Period, Shares, New Issues		78,100,000		149,000,000.0
Stock Issued During Period, Value, New Issues		$ 781,000	$ 432,000	$ 1,456,000	$ 709,000
Common Stock, Shares Authorized		$ 189,000		$ 189,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount						$ 1,000,000
Common Stock, Shares Authorized						$ 1,500,000
Common Stock [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues		78,100,000	44,700,000	149,000,000.0	72,500,000
Stock Issued During Period, Value, New Issues		$ 0	$ 0	$ 1,000	$ 0
Series F Preferred Stock [Member]
Subsequent Event [Line Items]
Preferred Stock, Liquidation Preference, Value	$ 575,000
Preferred Stock, Dividend Rate, Percentage	6.125%
Preferred Stock, Shares Issued		23,000		23,000
Preferred Stock, Capital Shares Reserved for Future Issuance		23,000		23,000
Depositary Share [Member]
Subsequent Event [Line Items]
Preferred Stock, Shares Issued		67,500,000		67,500,000
Depositary Share [Member] \| Series F Preferred Stock [Member]
Subsequent Event [Line Items]
Preferred Stock, Shares Issued	23,000,000.0

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis


	September 30, 2024						December 31, 2023
	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets:
Agency securities	$	—	$	67,938	$	—	$	—	$	53,673	$	—
Agency securities transferred to consolidated VIEs	—		106		—		—		121		—
Credit risk transfer securities	—		620		—		—		723		—
Non-Agency securities	—		273		—		—		307		—
U.S. Treasury securities	2,570		—		—		1,540		—		—
Interest rate swaps 1	—		96		—		—		15		—
Swaptions	—		2		—		—		89		—
TBA securities	—		49		—		—		81		—
SOFR Futures	7		—		—		—		—		—
U.S. Treasury futures	3		—		—		—		—		—
Total	$	2,580	$	69,084	$	—	$	1,540	$	55,009	$	—
Liabilities:
Debt of consolidated VIEs	$	—	$	69	$	—	$	—	$	80	$	—
Obligation to return U.S. Treasury securities borrowed under reverse repurchase agreements	13,009		—		—		10,894		—		—
Interest rate swaps 1	—		—		—		—		1		—
Credit default swaps 1	—		—		—		—		—		—
TBA securities	—		48		—		—		15		—
U.S. Treasury futures	—		—		—		336		—		—
SOFR Futures	5		—		—		10		—		—
Total	$	13,014	$	117	$	—	$	11,240	$	96	$	—

________________________________

1.As of September 30, 2024 and December 31, 2023, the net fair value of our interest rate swaps excluding the recognition of variation margin settlements as a direct reduction of carrying value was a net asset (liability) of $1.4 billion and $2.9 billion, respectively, based on "Level 2" inputs. As of September 30, 2024 and December 31, 2023, the net fair value of our credit default swaps excluding the recognition of variation margin settlements was a net asset (liability) of $(7) million and $(6) million, respectively, based on "Level 2" inputs. See Notes 2 and 5 for additional details.

Summary of Significant Accounting Policies (Policy)	9 Months Ended
Summary of Significant Accounting Policies (Policy)	Sep. 30, 2024
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reverse Repurchase Agreements Policy [Policy Text Block]	Reverse Repurchase Agreements and Obligation to Return Securities Borrowed under Reverse Repurchase Agreements We borrow securities to cover short sales of U.S. Treasury securities through reverse repurchase transactions under our master repurchase agreements (see Derivative Instruments below). We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on the balance sheet based on the value of the underlying borrowed securities as of the reporting date. We may also enter into reverse repurchase agreements to earn a yield on excess cash balances. The securities received as collateral in connection with our reverse repurchase agreements mitigate our credit risk exposure to counterparties. Our reverse repurchase agreements typically have maturities of 30 days or less.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements We consider the applicability and impact of all ASUs issued by the FASB. There are no unadopted ASUs that are expected to have a significant impact on our consolidated financial statements when adopted or other recently adopted ASUs that had a significant impact on our consolidated financial statements upon adoption.
Investment Securities	Investment Securities Agency RMBS consist of residential mortgage pass-through securities and collateralized mortgage obligations ("CMOs") guaranteed by the Federal National Mortgage Association ("Fannie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac," and together with Fannie Mae, the "GSEs") or the Government National Mortgage Association ("Ginnie Mae"). CRT securities are risk sharing instruments issued by the GSEs, and similarly structured transactions issued by third-party market participants, that synthetically transfer a portion of the risk associated with credit losses within pools of conventional residential mortgage loans from the GSEs and/or third parties to private investors. Unlike Agency RMBS, full repayment of the original principal balance of CRT securities is not guaranteed by a GSE or U.S. Government agency; rather, "credit risk transfer" is achieved by writing down the outstanding principal balance of the CRT securities if credit losses on a related pool of loans exceed certain thresholds. By reducing the amount that they are obligated to repay to holders of CRT securities, the GSEs and/or other third parties offset credit losses on the related loans. Non-Agency RMBS and CMBS (together, "Non-Agency MBS") are backed by residential and commercial mortgage loans, respectively, packaged and securitized by a private institution, such as a commercial bank. Non-Agency MBS typically benefit from credit enhancements derived from structural elements, such as subordination, over-collateralization or insurance, but nonetheless carry a higher level of credit exposure than Agency RMBS. All of our securities are reported at fair value on our consolidated balance sheet. Accounting Standards Codification ("ASC") Topic 320, Investments—Debt and Equity Securities, requires that at the time of purchase, we designate a security as held-to-maturity, available-for-sale or trading, depending on our ability and intent to hold such security to maturity. Alternatively, we may elect the fair value option of accounting for securities pursuant to ASC Topic 825, Financial Instruments. Prior to fiscal year 2017, we primarily designated our investment securities as available-for-sale. On January 1, 2017, we began electing the fair value option of accounting for all investment securities newly acquired after such date. Unrealized gains and losses on securities classified as available-for-sale are reported in accumulated other comprehensive income ("OCI"), whereas unrealized gains and losses on securities for which we elected the fair value option, or are classified as trading, are reported in net income through other gain (loss). Upon the sale of a security designated as available-for-sale, we determine the cost of the security and the amount of unrealized gain or loss to reclassify out of accumulated OCI into earnings based on the specific identification method. In our view, the election of the fair value option simplifies the accounting for investment securities and more appropriately reflects the results of our operations for a reporting period by presenting the fair value changes for these assets in a manner consistent with the presentation and timing of the fair value changes for our derivative instruments. We generally recognize gains or losses through net income on available-for-sale securities only if the security is sold; however, if the fair value of a security declines below its amortized cost and we determine that it is more likely than not that we will incur a realized loss on the security when we sell the asset, we will recognize the difference between the amortized cost and the fair value in net income as a component of other gain (loss). We did not recognize any loss on available for sale securities through net income that we held as of September 30, 2024 because, as of such date, we neither intended to sell any securities in an unrealized loss position nor was it more likely than not that we would be required to sell such securities before recovery of their amortized cost basis. Since all of our available-for-sale designated securities consist of Agency RMBS, we do not have an allowance for credit losses. We have not recognized impairment losses on our available-for-sale securities through net income for the periods presented in our consolidated financial statements.
Interest Income	Interest Income Interest income is accrued based on the outstanding principal amount of the investment securities and their contractual terms. Premiums or discounts associated with the purchase of Agency RMBS and non-Agency MBS of high credit quality are amortized or accreted into interest income, respectively, over the projected lives of the securities, including contractual payments and estimated prepayments, using the effective interest method in accordance with ASC Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs. We estimate long-term prepayment speeds of our mortgage securities using a third-party service and market data. The third-party service provider estimates prepayment speeds using models that incorporate the forward yield curve, primary to secondary mortgage rate spreads, current mortgage rates, mortgage rates of the outstanding loans, age and size of the outstanding loans, loan-to-value ratios, interest rate volatility and other factors. We review the prepayment speeds estimated by the third-party service for reasonableness with consideration given to both historical prepayment speeds and current market conditions. If based on our assessment, we believe that the third-party model does not fully reflect our expectations of the current prepayment landscape we may make adjustments to the models. We review our actual and anticipated prepayment experience on at least a quarterly basis and effective yields are recalculated when differences arise between (i) our previous estimate of future prepayments and (ii) actual prepayments to date and our current estimate of future prepayments. We are required to record an adjustment in the current period to premium amortization / discount accretion for the cumulative effect of the difference in the effective yields as if the recalculated yield had been in place as of the security's acquisition date through the reporting date. At the time we purchase CRT securities and non-Agency MBS that are not of high credit quality, we determine an effective yield based on our estimate of the timing and amount of future cash flows and our cost basis. Our initial cash flow estimates for these investments are based on our observations of current information and events and include assumptions related to interest rates, prepayment rates, collateral call provisions, and the impact of default and severity rates on the timing and amount of credit losses. On at least a quarterly basis, we review the estimated cash flows and make appropriate adjustments based on inputs and analysis received from external sources, internal models, and our judgment regarding such inputs and other factors. Any resulting changes in effective yield are recognized prospectively based on the current amortized cost of the investment adjusted for credit impairments, if any.
Repurchase and Resale Agreements Policy [Policy Text Block]	Repurchase Agreements We finance the acquisition of securities for our investment portfolio primarily through repurchase agreements with our lending counterparties. Repurchase arrangements involve the sale and a simultaneous agreement to repurchase the securities at a future date. We maintain a beneficial interest in the specific securities pledged during the term of each repurchase arrangement and we receive the related principal and interest payments. Pursuant to ASC Topic 860, Transfers and Servicing, we account for repurchase agreements as collateralized financing transactions, which are carried at their contractual amounts (cost), plus accrued interest. Our repurchase agreements typically have maturities of less than one year.
Derivative Instruments	Derivative Instruments We use a variety of derivative instruments to hedge a portion of our exposure to market risks, including interest rate, prepayment, extension and liquidity risks. The objective of our risk management strategy is to reduce fluctuations in net book value over a range of interest rate scenarios. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing during a period of rising interest rates. The primary instruments that we use are interest rate swaps, options to enter into interest rate swaps ("swaptions"), U.S. Treasury securities and U.S. Treasury futures contracts. We also use forward contracts in the Agency RMBS "to-be-announced" market, or TBA securities, to invest in and finance Agency securities and to periodically reduce our exposure to Agency RMBS. We account for derivative instruments in accordance with ASC Topic 815, Derivatives and Hedging ("ASC 815"). ASC 815 requires an entity to recognize all derivatives as either assets or liabilities in our accompanying consolidated balance sheets and to measure those instruments at fair value. None of our derivative instruments have been designated as hedging instruments for accounting purposes under the provisions of ASC 815, consequently changes in the fair value of our derivative instruments are reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Our derivative agreements generally contain provisions that allow for netting or setting off derivative assets and liabilities with the counterparty; however, we report related assets and liabilities on a gross basis in our consolidated balance sheets. Derivative instruments in a gain position are reported as derivative assets at fair value and derivative instruments in a loss position are reported as derivative liabilities at fair value in our consolidated balance sheets. Changes in fair value of derivative instruments and periodic settlements related to our derivative instruments are recorded in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Net cash receipts from and payments on our derivative instruments are classified in our consolidated statements of cash flows according to the underlying nature or purpose of the derivative transaction, generally in the investing section. Interest rate swap agreements We use interest rate swaps to economically hedge the variable cash flows associated with our borrowings made under repurchase agreements. Under our interest rate swap agreements, we typically pay a fixed rate and receive a floating rate ("payer swaps") based on a short-term benchmark rate, such as the Secured Overnight Financing Rate ("SOFR") and Overnight Index Swap Rate ("OIS"). Our interest rate swaps typically have terms from one to 10 years. Our interest rate swaps are centrally cleared through a registered commodities exchange. The clearing exchange requires that we post an "initial margin" amount determined by the exchange. The initial margin amount is intended to be set at a level sufficient to protect the exchange from the interest rate swap's maximum estimated single-day price movement and is subject to adjustment based on changes in market volatility and other factors. We also exchange daily settlements of "variation margin" based upon changes in fair value, as measured by the exchange. Pursuant to rules governing central clearing activities, we recognize variation margin settlements as a direct reduction of the carrying value of the interest rate swap asset or liability. Interest rate swaptions We purchase interest rate swaptions to help mitigate the potential impact of larger, more rapid changes in interest rates on the performance of our investment portfolio. Interest rate swaptions provide us the option to enter into an interest rate swap agreement for a predetermined notional amount, stated term and pay and receive interest rates in the future. Our interest rate swaption agreements are not subject to central clearing. The difference between the premium paid and the fair value of the swaption is reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. If a swaption expires unexercised, the realized loss on the swaption would be equal to the premium paid. If we sell or exercise a swaption, the realized gain or loss on the swaption would be equal to the difference between the cash or the fair value of the underlying interest rate swap and the premium paid. TBA securities A TBA security is a forward contract for the purchase or sale of Agency RMBS at a predetermined price, face amount, issuer, coupon and stated maturity on an agreed-upon future date. The specific Agency RMBS to be delivered into the contract are not known until shortly before the settlement date. We may choose, prior to settlement, to move the settlement of these securities out to a later date by entering into an offsetting TBA position, net settling the offsetting positions for cash, and simultaneously purchasing or selling a similar TBA contract for a later settlement date (together referred to as a "dollar roll transaction"). The Agency securities purchased or sold for a forward settlement date are typically priced at a discount to equivalent securities settling in the current month. This difference, or "price drop," is the economic equivalent of interest income on the underlying Agency securities, less an implied funding cost, over the forward settlement period (referred to as "dollar roll income"). Consequently, forward purchases of Agency securities and dollar roll transactions represent a form of off-balance sheet financing. We account for TBA contracts as derivative instruments since either the TBA contracts do not settle in the shortest period of time possible or we cannot assert that it is probable at inception and throughout the term of the TBA contract that we will physically settle the contract on the settlement date. We account for TBA dollar roll transactions as a series of derivative transactions. U.S. Treasury securities and US Treasury futures contracts We use U.S. Treasury securities and U.S. Treasury futures contracts to mitigate the potential impact of changes in interest rates on the performance of our portfolio. We enter into short-sales of U.S. Treasury securities by borrowing the securities under reverse repurchase agreements and selling them into the market. We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on our accompanying consolidated balance sheets based on the value of the underlying U.S. Treasury security as of the reporting date. Treasury futures contracts are standardized contracts that obligate us to sell or buy U.S. Treasury securities for future delivery. Gains and losses associated with U.S. Treasury securities and U.S. Treasury futures contracts are recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.
Fair Value Measurement, Policy	Fair Value Measurements We determine the fair value of financial instruments based on our estimate of the price that would be received to sell the asset or paid to transfer the liability in an orderly transaction between market participants at the measurement date. We utilize a three-level valuation hierarchy for disclosure of fair value measurements based upon the transparency of inputs to the valuation of the instrument as of the measurement date. We categorize a financial instrument within the hierarchy based upon the lowest level of input that is significant to the fair value measurement. The three levels of valuation hierarchy are defined as follows: •Level 1 Inputs —Quoted prices (unadjusted) for identical unrestricted assets and liabilities in active markets that are accessible at the measurement date. •Level 2 Inputs —Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable. •Level 3 Inputs —Instruments with primarily unobservable market data that cannot be corroborated. The majority of our financial instruments are classified as Level 2 inputs. The availability of observable inputs can be affected by a wide variety of factors, including the type of instrument, whether the instrument is new and not yet established in the marketplace and other characteristics particular to the instrument. We typically obtain price estimates from multiple third- party pricing sources, such as pricing services and dealers, or, if applicable, from the registered clearing exchange. We make inquiries of third-party pricing sources to understand the significant inputs and assumptions they used to determine their prices and that they are derived from orderly transactions, particularly during periods of elevated market turbulence and reduced market liquidity. We also review third-party price estimates and perform procedures to validate their reasonableness, including an analysis of the range of estimates for each position, comparison to recent trade activity for similar securities and for consistency with market conditions observed as of the measurement date. While we do not adjust prices we obtain from pricing sources, we will exclude prices for securities from our estimation of fair value if we determine based on our validation procedures and our market knowledge and expertise that the price is significantly different from what observable market data would indicate and we cannot obtain an understanding from the third-party source as to the significant inputs used to determine the price. The following is a description of the valuation methodologies used for financial instruments measured at fair value on a recurring basis classified as Level 2 inputs. These instruments trade in active markets such that participants transact with sufficient frequency and volume to provide transparent pricing information on an ongoing basis. The liquidity of these markets and the similarity of our instruments to those actively traded enable our pricing sources and us to utilize the observed quoted prices as a basis for formulating fair value measurements. Investment securities - are valued based on prices obtained from multiple third-party pricing sources. The pricing sources utilize various valuation approaches, including market and income approaches. For Agency RMBS, the pricing sources primarily utilize a matrix pricing technique that interpolates the estimated fair value based on observed quoted prices for TBA securities having the same coupon, maturity and issuer, adjusted to reflect the specific characteristics of the pool of mortgages underlying the Agency security, such as maximum loan balance, loan vintage, loan-to-value ratio, geography and other characteristics as may be appropriate. For other investment securities, the pricing sources primarily utilize discounted cash flow model-derived pricing techniques to estimate the fair value. Such models incorporate market-based discount rate assumptions based on observable inputs such as recent trading activity, credit data, volatility statistics, benchmark interest rate curves, spread measurements to benchmark curves and other market data that are current as of the measurement date and may include certain unobservable inputs, such as assumptions of future levels of prepayment, defaults and loss severities. TBA securities - are valued using prices obtained from third-party pricing sources based on pricing models that reference recent trading activity. Interest rate swaps - are valued using the daily settlement price, or fair value, determined by the clearing exchange based on a pricing model that references observable market inputs, including current benchmark rates and the forward yield curve. Interest rate swaptions - are valued using prices obtained from the counterparty and other third-party pricing models. The pricing models are based on the value of the future interest rate swap that we have the option to enter into as well as the remaining length of time that we have to exercise the option based on observable market inputs, adjusted for non-performance risk, if any. U.S. Treasury securities and futures are valued based on quoted prices for identical instruments in active markets and are classified as Level 1 assets. None of our financial instruments are classified as Level 3 inputs.

- Definition

Disclosure of accounting policy for investment in financial asset.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Summary of Significant Accounting Policies Variable Interest Entities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Other Long-term Debt	$ 69	$ 80

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Consolidated Statement of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, value at Dec. 31, 2022	$ 7,870,000	$ 1,634,000	$ 6,000	$ 14,186,000	$ (7,284,000)	$ (672,000)
Balance, Common Stock, shares at Dec. 31, 2022			574,600
Net income (loss)	(257,000)				(257,000)
Other comprehensive income (loss):
Unrealized Gains and (Losses), Net	$ (136,000)					(136,000)
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture	900
APIC, Share-based Payment Arrangement, Recognition and Exercise	$ 6,000			6,000
Stock Issued During Period, Shares, New Issues			72,500
Stock Issued During Period, Value, New Issues	709,000		$ 0	709,000
Preferred dividends declared	(92,000)				(92,000)
Common dividends declared	(650,000)				(650,000)
Balance, value at Sep. 30, 2023	7,450,000	1,634,000	$ 6,000	14,901,000	(8,283,000)	(808,000)
Balance, Common Stock, shares at Sep. 30, 2023			648,000
Balance, value at Jun. 30, 2023	7,878,000	1,634,000	$ 6,000	14,466,000	(7,633,000)	(595,000)
Balance, Common Stock, shares at Jun. 30, 2023			603,300
Net income (loss)	(392,000)				(392,000)
Other comprehensive income (loss):
Unrealized Gains and (Losses), Net	$ (213,000)					(213,000)
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture	0
APIC, Share-based Payment Arrangement, Recognition and Exercise	$ 3,000			3,000
Stock Issued During Period, Shares, New Issues			44,700
Stock Issued During Period, Value, New Issues	432,000		$ 0	432,000
Preferred dividends declared	(31,000)				(31,000)
Common dividends declared	(227,000)				(227,000)
Balance, value at Sep. 30, 2023	7,450,000	1,634,000	$ 6,000	14,901,000	(8,283,000)	(808,000)
Balance, Common Stock, shares at Sep. 30, 2023			648,000
Balance, value at Dec. 31, 2023	$ 8,257,000	1,634,000	$ 7,000	15,281,000	(8,148,000)	(517,000)
Balance, Common Stock, shares at Dec. 31, 2023	694,300		694,300
Net income (loss)	$ 741,000				741,000
Other comprehensive income (loss):
Unrealized Gains and (Losses), Net	$ 105,000					105,000
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture	900
APIC, Share-based Payment Arrangement, Recognition and Exercise	$ 10,000			10,000
Stock Issued During Period, Shares, New Issues	149,000		149,000
Stock Issued During Period, Value, New Issues	$ 1,456,000		$ 1,000	1,455,000
Preferred dividends declared	(96,000)				(96,000)
Common dividends declared	(817,000)				(817,000)
Balance, value at Sep. 30, 2024	$ 9,656,000	1,634,000	$ 8,000	16,746,000	(8,320,000)	(412,000)
Balance, Common Stock, shares at Sep. 30, 2024	844,200		844,200
Balance, value at Jun. 30, 2024	$ 8,652,000	1,634,000	$ 8,000	15,960,000	(8,338,000)	(612,000)
Balance, Common Stock, shares at Jun. 30, 2024			766,100
Net income (loss)	346,000				346,000
Other comprehensive income (loss):
Unrealized Gains and (Losses), Net	$ 200,000					200,000
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture	0
APIC, Share-based Payment Arrangement, Recognition and Exercise	$ 5,000			5,000
Stock Issued During Period, Shares, New Issues	78,100		78,100
Stock Issued During Period, Value, New Issues	$ 781,000		$ 0	781,000
Preferred dividends declared	(33,000)				(33,000)
Common dividends declared	(295,000)				(295,000)
Balance, value at Sep. 30, 2024	$ 9,656,000	$ 1,634,000	$ 8,000	$ 16,746,000	$ (8,320,000)	$ (412,000)
Balance, Common Stock, shares at Sep. 30, 2024	844,200		844,200

Repurchase Agreements And Reverse Repurchase Agreements

9 Months Ended

Sep. 30, 2024

Disclosure of Repurchase Agreements [Abstract]

Repurchase Agreements And Other Debt

Repurchase Agreements and Reverse Repurchase Agreements

Repurchase Agreements

We pledge our securities as collateral under our borrowings structured as repurchase agreements with financial institutions. Amounts available to be borrowed are dependent upon the fair value of the securities pledged as collateral, which fluctuates with changes in interest rates, type of security and liquidity conditions within the banking, mortgage finance and real estate industries. If the fair value of our pledged securities declines, lenders will typically require us to post additional collateral or pay down borrowings to re-establish agreed upon collateral requirements, referred to as "margin calls." Similarly, if the fair value of our pledged securities increases, lenders may release collateral back to us. As of September 30, 2024, we had met all margin call requirements. For additional information regarding our pledged assets, please refer to Note 6.

As of September 30, 2024 and December 31, 2023, we had $66.0 billion and $50.4 billion, respectively, of repurchase agreements outstanding used to fund our investment portfolio and temporary holdings of U.S. Treasury securities. The terms and conditions of our repurchase agreements are typically negotiated on a transaction-by-transaction basis or subject to a tri-party repo agreement. The following table summarizes our borrowings under repurchase agreements by their remaining maturities as of September 30, 2024 and December 31, 2023 (dollars in millions):


	September 30, 2024					December 31, 2023
Remaining Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity
Investment securities repo
≤ 1 month	$	53,118	5.26	%	8	$	40,946	5.61	%	11
> 1 to ≤ 3 months	9,904		5.08	%	51	7,933		5.55	%	64
> 3 to ≤ 6 months	377		4.86	%	95	—		—	%	—




Investment securities repo	63,399		5.23	%	15	48,879		5.60	%	19
U.S. Treasury repo:
≤ 1 month	2,580		5.06	%	1	1,547		5.54	%	2
Total	$	65,979	5.22	%	14	$	50,426	5.60	%	19

As of September 30, 2024 and December 31, 2023, $31.7 billion and $16.7 billion, respectively, of our investment securities repurchase agreements and all of our U.S. Treasury repurchase agreements had an overnight maturity of one business day and none of our repurchase agreements were due on demand. As of September 30, 2024, we had $26.7 billion of forward commitments to enter into repurchase agreements with a weighted average forward start date of 1 day and a weighted average interest rate of 5.15%. As of December 31, 2023, we had $8.8 billion of forward commitments to enter into repurchase agreements, with a weighted average forward start date of 4 days and a weighted average interest rate of 5.54%. As of September 30, 2024 and December 31, 2023, 50% and 48%, respectively, of our repurchase agreement funding was sourced through our wholly-owned captive broker-dealer subsidiary, Bethesda Securities, LLC ("BES"). Amounts sourced through BES include funding from the General Collateral Finance Repo service ("GCF Repo") offered by the Fixed Income Clearing Corporation ("FICC"), which totaled 47% and 43% of our repurchase agreement funding outstanding as of September 30, 2024 and December 31, 2023, respectively.

Reverse Repurchase Agreements

As of September 30, 2024 and December 31, 2023, we had $13.5 billion and $11.6 billion, respectively, of reverse repurchase agreements outstanding used primarily to borrow securities to cover short sales of U.S. Treasury securities, for which we had associated obligations to return borrowed securities at fair value of $13.0 billion and $10.9 billion, respectively. As of September 30, 2024 and December 31, 2023, $4.1 billion and $3.1 billion, respectively, of our reverse repurchase agreements were with the FICC sourced through BES.

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 346	$ (392)	$ 741	$ (257)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

Derivative and Other Hedging Instruments

9 Months Ended

Sep. 30, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

US Government Futures Securities [Table Text Block]


U.S. Treasury Futures	September 30, 2024								December 31, 2023
Years to Maturity	Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1		Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1

> 5 year ≤ 7 years	$	750	$	857	$	857	$	—	$	(2,714)	$	(2,961)	$	(3,064)	$	(103)
> 7 year ≤ 10 years	—		—		—		—		(2,924)		(3,294)		(3,451)		(157)
> 10 years	(791)		(986)		(983)		3		(791)		(913)		(989)		(76)
Total U.S. Treasury futures	$	(41)	$	(129)	$	(126)	$	3	$	(6,429)	$	(7,168)	$	(7,504)	$	(336)

________________________________

Derivative and Other Hedging Instruments

For the periods presented, our interest rate based hedges primarily consisted of interest rate swaps, interest rate swaptions, U.S. Treasury securities and U.S. Treasury futures contracts. We also utilized forward contracts, primarily consisting of TBA securities, for the purchase and sale of investment securities. For additional information regarding our derivative instruments and our overall risk management strategy, please refer to the discussion of derivative and other hedging instruments in Note 2.

Derivative and Other Hedging Instrument Assets (Liabilities), at Fair Value

The table below summarizes fair value information about our derivative and other hedging instrument assets/(liabilities) as of September 30, 2024 and December 31, 2023 (in millions):




Derivative and Other Hedging Instruments	Balance Sheet Location	September 30, 2024		December 31, 2023
Interest rate swaps 1	Derivative assets, at fair value	$	96	$	15
Swaptions	Derivative assets, at fair value	2		89
TBA and forward settling non-Agency securities	Derivative assets, at fair value	49		81
U.S. Treasury futures - short	Derivative assets, at fair value	3		—
SOFR futures contracts - long	Derivative assets, at fair value	7		—
Total derivative assets, at fair value		$	157	$	185

Interest rate swaps 1	Derivative liabilities, at fair value	$	—	$	(1)
TBA and forward settling non-Agency securities	Derivative liabilities, at fair value	(48)		(15)
U.S. Treasury futures - short	Derivative liabilities, at fair value	—		(336)
SOFR futures contracts - long	Derivative liabilities, at fair value	(5)		(10)
Credit default swaps 1	Derivative liabilities, at fair value	—		—
Total derivative liabilities, at fair value		$	(53)	$	(362)

U.S. Treasury securities - long	U.S. Treasury securities, at fair value	$	2,570	$	1,540
U.S. Treasury securities - short	Obligation to return securities borrowed under reverse repurchase agreements, at fair value	(13,009)		(10,894)
Total U.S. Treasury securities, net at fair value		$	(10,439)	$	(9,354)

________________________________

The following tables summarize certain characteristics of our derivative and other hedging instruments outstanding as of September 30, 2024 and December 31, 2023 (dollars in millions):


Pay Fixed / Receive Variable Interest Rate Swaps	September 30, 2024					December 31, 2023
Years to Maturity	Notional Amount		Average Fixed Pay Rate	Average Variable Receive Rate 1	Average Maturity (Years)	Notional Amount		Average Fixed Pay Rate	Average Variable Receive Rate 1	Average Maturity (Years)
≤ 1 years	$	7,750	0.13%	4.90%	0.8	$	13,750	0.14%	5.37%	0.4
> 1 to ≤ 3 years	11,300		0.22%	4.93%	1.9	15,800		0.17%	5.36%	2.0
> 3 to ≤ 5 years	3,800		0.25%	4.96%	4.2	5,800		0.24%	5.38%	3.9
> 5 to ≤ 7 years	4,150		2.15%	4.94%	6.0	3,900		0.92%	5.37%	6.2
> 7 to ≤ 10 years	12,146		3.51%	4.96%	9.0	5,226		3.06%	5.38%	9.2

Total	$	39,146	1.43%	4.94%	4.5	$	44,476	0.57%	5.37%	3.0

________________________________

1.As of September 30, 2024, 82% and 18% of notional amount receive index references SOFR and OIS, respectively. As of December 31, 2023, 80% and 20% of notional amount receive index references SOFR and OIS, respectively.


Receive Fixed / Pay Variable Interest Rate Swaps	September 30, 2024					December 31, 2023
Years to Maturity	Notional Amount		Average Variable Pay Rate 1	Average Fixed Receive Rate	Average Maturity (Years)	Notional Amount		Average Variable Pay Rate 1	Average Fixed Receive Rate	Average Maturity (Years)

> 1 to ≤ 3 years	$	—	—%	—%	0.0	$	(1,000)	5.38%	4.65%	1.5

________________________________

1.Pay index references SOFR.


Payer Swaptions	Option					Underlying Payer Swap
Current Option Expiration Date	Cost Basis		Fair Value		Average Months to Current Option Expiration Date	Notional Amount		Average Fixed Pay Rate 1	Average Term (Years)







December 31, 2023
≤ 1 year	$	28	$	86	5	$	1,250	2.61%	10.0

________________________________

1.Receive index references SOFR.


Receiver Swaptions	Option					Underlying Receiver Swap
Current Option Expiration Date	Cost Basis		Fair Value		Average Months to Current Option Expiration Date	Notional Amount		Average Fixed Receive Rate	Average Term (Years)
September 30, 2024
> 1 year ≤ 2 years	$	3	$	2	15	$	150	2.98%	5.0

December 31, 2023
≤ 1 year	$	3	$	3	24	$	150	2.98%	5.0


U.S. Treasury Securities 1	September 30, 2024						December 31, 2023
Years to Maturity	Face Amount Long/(Short)		Cost Basis		Fair Value		Face Amount Long/(Short)		Cost Basis		Fair Value
≤ 5 years	$	2,451	$	2,464	$	2,493	$	1,408	$	1,419	$	1,454
> 5 year ≤ 7 years	(1,635)		(1,633)		(1,470)		(818)		(821)		(703)
> 7 year ≤ 10 years	(9,729)		(9,442)		(9,547)		(8,649)		(8,277)		(8,187)
> 10 years	(1,782)		(1,830)		(1,915)		(1,796)		(1,796)		(1,918)
Total U.S. Treasury securities	$	(10,695)	$	(10,441)	$	(10,439)	$	(9,855)	$	(9,475)	$	(9,354)

________________________________


U.S. Treasury Futures	September 30, 2024								December 31, 2023
Years to Maturity	Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1		Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1

> 5 year ≤ 7 years	$	750	$	857	$	857	$	—	$	(2,714)	$	(2,961)	$	(3,064)	$	(103)
> 7 year ≤ 10 years	—		—		—		—		(2,924)		(3,294)		(3,451)		(157)
> 10 years	(791)		(986)		(983)		3		(791)		(913)		(989)		(76)
Total U.S. Treasury futures	$	(41)	$	(129)	$	(126)	$	3	$	(6,429)	$	(7,168)	$	(7,504)	$	(336)

________________________________


	September 30, 2024								December 31, 2023
TBA Securities by Coupon	Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1		Notional Amount Long (Short)		Cost Basis		Fair Value		Net Carrying Value 1
15-Year TBA securities:





≥ 5.0%	$	—	$	—	$	—	$	—	$	90	$	89	$	91	$	2
Total 15-Year TBA securities	—		—		—		—		90		89		91		2
30-Year TBA securities:
≤ 3.0%	(704)		(654)		(642)		12		(29)		(24)		(25)		(1)
3.5%	289		267		268		1		—		—		—		—
4.0%	(116)		(110)		(111)		(1)		—		—		—		—
4.5%	5,461		5,402		5,376		(26)		363		343		352		9
5.0%	3,865		3,841		3,865		24		1,717		1,704		1,704		—
5.5%	(3,902)		(3,950)		(3,948)		2		2,034		2,014		2,047		33
6.0%	(1,253)		(1,268)		(1,280)		(12)		20		10		21		11
≥ 6.5%	524		539		540		1		1,137		1,152		1,164		12
Total 30-Year TBA securities, net	4,164		4,067		4,068		1		5,242		5,199		5,263		64
Total TBA securities, net	$	4,164	$	4,067	$	4,068	$	1	$	5,332	$	5,288	$	5,354	$	66

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As of September 30, 2024 and December 31, 2023, we held SOFR futures contracts with a long notional position of $1.0 billion and $0.9 billion, respectively, measured on a two-year swap equivalent basis, with a net carrying value of $(5) million and $(10) million, respectively.

As of September 30, 2024 and December 31, 2023, we held centrally cleared credit default swaps ("CDS") with a notional value of $96 million and $95 million, respectively, that reference the Markit CDX Investment Grade or High Yield Grade Index, maturing in June 2029 and December 2028, respectively. Under the terms of these contracts, we make fixed periodic payments equal to 1% per annum of the notional value and we are entitled to receive payments in the event of qualifying credit events. As of September 30, 2024 and December 31, 2023, the credit default swaps had a market value of $(7) million and $(6) million, respectively, and a carrying value of zero dollars, net of variation margin settlements. Pursuant to rules governing central clearing activities, we recognize variation margin settlements as a direct reduction of the carrying value of the CDS asset or liability.

Gain (Loss) From Derivative Instruments and Other Securities, Net


Derivative and Other Hedging Instruments	Beginning Notional Amount		Additions	Settlement, Termination, Expiration or Exercise	Ending Notional Amount		Gain/(Loss) on Derivative Instruments and Other Securities, Net 1
Three months ended September 30, 2024:
TBA securities, net	$	5,511	27,804	(29,151)	$	4,164	$	98

Interest rate swaps - payer	$	48,696	25	(9,575)	$	39,146	(1,036)

Credit default swaps - buy protection	$	(96)	—	—	$	(96)	(3)

Receiver swaptions	$	(150)	—	—	$	(150)	1
U.S. Treasury securities - short position	$	(13,999)	(3,983)	4,759	$	(13,223)	(509)
U.S. Treasury securities - long position	$	2,427	4,349	(4,248)	$	2,528	36
U.S. Treasury futures contracts - short position	$	(41)	(41)	41	$	(41)	(17)
							$	(1,430)

Three months ended September 30, 2023:
TBA securities, net	$	10,289	35,448	(43,386)	$	2,351	$	(148)

Interest rate swaps - payer	$	48,726	1,920	(5,250)	$	45,396	759
Interest rate swaps - receive, net	$	(1,000)	—	—	$	(1,000)	(6)
Credit default swaps - buy protection	$	(710)	(297)	836	$	(171)	—
Payer swaptions	$	1,600	—	(250)	$	1,350	89

U.S. Treasury securities - short position	$	(8,627)	(5,668)	4,161	$	(10,134)	537
U.S. Treasury securities - long position	$	1,543	1,499	(2,782)	$	260	(20)
U.S. Treasury futures contracts - short position	$	(5,900)	(10,070)	7,001	$	(8,969)	412
							$	1,623

Nine months ended September 30, 2024:
TBA securities, net	$	5,332	89,717	(90,885)	$	4,164	$	11

Interest rate swaps - payer	$	44,476	11,595	(16,925)	$	39,146	(199)
Interest rate swaps - receiver	$	(1,000)	—	1,000	$	—	(9)
Credit default swaps - buy protection	$	(96)	(96)	96	$	(96)	(6)
Payer swaptions	$	1,250	—	(1,250)	$	—	33
Receiver swaptions	$	(150)	—	—	$	(150)	1
U.S. Treasury securities - short position	$	(11,347)	(10,247)	8,371	$	(13,223)	(8)
U.S. Treasury securities - long position	$	1,492	7,690	(6,654)	$	2,528	(19)
U.S. Treasury futures contracts - short position	$	(6,429)	(4,007)	10,395	$	(41)	258
							$	62

Nine months ended September 30, 2023:
TBA securities, net	$	19,050	138,448	(155,147)	$	2,351	$	(172)

Interest rate swaps - payer	$	47,825	5,396	(7,825)	$	45,396	1,387
Interest rate swaps - receive, net	$	—	(1,000)	—	$	(1,000)	(9)
Credit default swaps - buy protection	$	(215)	(1,292)	1,336	$	(171)	(8)
Payer swaptions	$	3,050	—	(1,700)	$	1,350	49

U.S. Treasury securities - short position	$	(7,373)	(15,470)	12,709	$	(10,134)	614
U.S. Treasury securities - long position	$	357	11,786	(11,883)	$	260	(75)
U.S. Treasury futures contracts - short position	$	(9,213)	(23,185)	23,429	$	(8,969)	389
							$	2,175

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