XML 120 R109.htm IDEA: XBRL DOCUMENT v3.24.3
Use of Special Purpose Entities and Variable Interest Entities - Schedule of Loan Securitization Transaction (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Mar. 31, 2024
Sep. 30, 2024
Dec. 31, 2023
Variable Interest Entity [Line Items]        
Weighted average fixed rate for Senior Bonds issued 4.54%   4.54% 4.33%
Asset-backed Securities, Securitized Loans and Receivables        
Variable Interest Entity [Line Items]        
Aggregate unpaid principal balance of residential whole loans sold $ 9,056,652   $ 9,056,652 $ 8,241,053
Outstanding amount of Senior Bonds, at carrying value 608,382   608,382 765,433
Outstanding amount of Senior Bonds, at fair value 4,680,615   4,680,615 3,985,372
Outstanding amount of Senior Bonds, total $ 5,288,997   $ 5,288,997 $ 4,750,805
Weighted average fixed rate for Senior Bonds issued 4.89%   4.89% 4.51%
Weighted average contractual maturity of Senior Bonds   36 years 36 years  
Cash received   $ 7,089,575 $ 7,827,356  
Debt issuance cost $ 1,200   1,200 $ 1,500
Asset-backed Securities, Securitized Loans and Receivables | Senior Notes        
Variable Interest Entity [Line Items]        
Debt instrument, face amount 7,908,296   7,908,296 7,152,213
Cash received 579,500   1,200,000  
Proceeds from Senior bond sold with Step up feature     $ 3,600,000 3,400,000
Asset-backed Securities, Securitized Loans and Receivables | Senior Notes | Variable Rate, Option 1        
Variable Interest Entity [Line Items]        
Debt instrument, basis spread on variable rate (in percent)     1.00%  
Asset-backed Securities, Securitized Loans and Receivables | Senior Notes | Variable Rate, Option 2        
Variable Interest Entity [Line Items]        
Debt instrument, basis spread on variable rate (in percent)     1.50%  
Asset-backed Securities, Securitized Loans and Receivables | Senior Notes | Variable Rate, Option 3        
Variable Interest Entity [Line Items]        
Debt instrument, basis spread on variable rate (in percent)     2.00%  
Asset-backed Securities, Securitized Loans and Receivables | Senior Notes | Minimum        
Variable Interest Entity [Line Items]        
Debt instrument, coupon step-up period     24 months  
Asset-backed Securities, Securitized Loans and Receivables | Senior Notes | Maximum        
Variable Interest Entity [Line Items]        
Debt instrument, coupon step-up period     48 months  
Asset-backed Securities, Securitized Loans and Receivables | Senior Support Certificates        
Variable Interest Entity [Line Items]        
Debt instrument, face amount $ 1,134,940   $ 1,134,940 $ 1,047,297