Annual report pursuant to Section 13 and 15(d)

Mortgage Servicing Rights, at Fair Value - Summary of Servicing Portfolio and its Activities (Detail)

v3.22.0.1
Mortgage Servicing Rights, at Fair Value - Summary of Servicing Portfolio and its Activities (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Servicing Assets at Fair Value [Line Items]        
Servicing rights   $ 39,299,416 $ 39,299,416 $ 22,269,362
Weighted average interest rate     3.03% 3.10%
Capitalized servicing rights [Member]        
Servicing Assets at Fair Value [Line Items]        
Beginning balance $ 22,269,362 26,675,358 $ 22,269,362 $ 288,057
Originations 6,312,227 17,491,713   21,241,997
Purchases 866,806 234,007   1,966,657
Sales MSR (1,090,267) (320,027)   (527)
Payoffs MSR (1,488,977) (3,935,261)   (991,716)
Other (193,793) (846,374)   (235,106)
Changes in fair value due to:        
Changes in fair value due to portfolio runoff and other (193,793) (846,374)   (235,106)
Ending Balance 26,675,358 39,299,416 39,299,416 22,269,362
Mortgage Servicing Rights [Member]        
Servicing Assets at Fair Value [Line Items]        
Beginning balance 180,684 267,364 180,684 2,600
Originations 65,964 161,364   159,434
Purchases 9,014 16,915   14,088
Payoffs, sales and curtailments (8,647) (2,501)   0
Other (14,760) (42,150)   (10,255)
Changes in fair value due to:        
Changes in market inputs or assumptions used in valuation model 35,109 26,950   14,817
Changes in fair value due to portfolio runoff and other (14,760) (42,150)   (10,255)
Ending Balance $ 267,364 427,942 427,942 180,684
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]        
Servicing Assets at Fair Value [Line Items]        
Servicing rights   37,079,995 37,079,995 20,501,504
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]        
Servicing Assets at Fair Value [Line Items]        
Servicing rights   1,109,962 1,109,962 1,727,831
Private Investors [Member]        
Servicing Assets at Fair Value [Line Items]        
Servicing rights   $ 1,109,459 $ 1,109,459 $ 40,027