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