v3.25.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
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 949,000 897,400
Common Stock, Shares, Outstanding 949,000 897,400
US Treasury Securities [Member] | Short [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Derivative, Forward Settlement Value $ (1,784,000) $ (4,969,000)
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 $ 63,275,000 59,952,000
Mortgage-backed Securities, Issued by Private Enterprises [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Pledged Financial Instruments, Securities 173,000 206,000
Receivable for securities sold [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Pledged Financial Instruments, Securities 908,000  
Asset Pledged as Collateral [Member] | Credit Risk Transfer Securities [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Pledged Financial Instruments, Securities 595,000 590,000
Asset Pledged as Collateral [Member] | US Treasury Securities [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Pledged Financial Instruments, Securities $ 3,268,000 $ 1,565,000