Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Fair Value, Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation (Details)

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Fair Value - Fair Value, Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
HMBS related obligations      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance $ (9,788,668) $ (9,926,132) $ (9,320,209)
Total gains or losses included in earnings (41,434) 76,397 (359,951)
Purchases, settlements and transfers:      
Purchases and additions, net (602,172) (1,587,902) (2,051,953)
Sales and settlements 506,142 1,221,327 1,943,445
Ending balance (9,926,132) (10,216,310) (9,788,668)
Derivative liabilities      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance (1,084) (936) (68)
Total gains or losses included in earnings   98 (834)
Purchases, settlements and transfers:      
Purchases and additions, net     (182)
Sales and settlements 148 838  
Ending balance (936) 0 (1,084)
Deferred purchase price liability      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance (3,842) (3,214) (4,300)
Total gains or losses included in earnings (29) (1,997) (3,014)
Purchases, settlements and transfers:      
Purchases and additions, net   (7,275) (138)
Sales and settlements 657 311 3,610
Ending balance (3,214) (12,175) (3,842)
Nonrecourse debt      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance (5,257,754) (5,205,892) (3,490,196)
Total gains or losses included in earnings (30,770) (77,717) (294,802)
Purchases, settlements and transfers:      
Purchases and additions, net (575,668) (1,260,585) (3,110,368)
Sales and settlements 658,300 809,184 1,637,612
Ending balance (5,205,892) (5,735,010) (5,257,754)
Nonrecourse MSR financing liability      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance (14,088) (22,051)  
Total gains or losses included in earnings 390 3,411 798
Purchases, settlements and transfers:      
Purchases and additions, net (8,353) (77,433) (15,101)
Sales and settlements     215
Ending balance (22,051) (96,073) $ (14,088)
TRA Liability      
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Beginning balance    
Total gains or losses included in earnings   (1,896)  
Purchases, settlements and transfers:      
Purchases and additions, net   (33,246)  
Sales and settlements    
Ending balance