v3.26.3
Repurchase Agreements (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements $ 24,190,276 $ 13,904,231
Weighted Average Rate 3.91% 4.10%
Fair Value of Collateral Pledged $ 25,239,341 $ 14,593,470
Accrued interest payable 137,153 95,196
Residential Mortgage Backed Securities [Member] | Agency MBS    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements $ 22,756,369 $ 12,857,827
Weighted Average Rate 3.91% 4.09%
Fair Value of Collateral Pledged [1] $ 23,782,830 $ 13,496,489
Commercial Mortgage Backed Securities [Member] | Agency MBS    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements $ 1,370,224 $ 967,024
Weighted Average Rate 3.92% 4.07%
Fair Value of Collateral Pledged [1] $ 1,390,727 $ 1,012,532
Interest-Only-Strip [Member] | Agency MBS    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements $ 63,683 $ 77,057
Weighted Average Rate 4.24% 4.41%
Fair Value of Collateral Pledged [1] $ 65,784 $ 81,913
Interest-Only-Strip [Member] | Non-Agency MBS    
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]    
Repurchase agreements $ 0 $ 2,323
Weighted Average Rate 0.00% 4.72%
Fair Value of Collateral Pledged [1] $ 0 $ 2,536
[1] (1)  Amounts disclosed for fair value of collateral pledged include amounts pledged to cover margin calls, which may differ in
collateral type from the initial collateral type pledged.