Annual report pursuant to Section 13 and 15(d)

DEBT OBLIGATIONS - Carrying Value (Details)

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DEBT OBLIGATIONS - Carrying Value (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Debt Instrument [Roll Forward]      
Beginning balance $ 22,656,235 $ 15,746,530  
Acquisitions 209,459 141,433  
Borrowings 243,316,628 99,662,678 $ 57,762,563
Repayments (230,954,107) (93,214,286) (54,289,124)
Ending balance 35,636,373 22,656,235 15,746,530
Excess MSRs      
Debt Instrument [Roll Forward]      
Beginning balance 297,563 483,978  
Acquisitions   0  
Ending balance 217,300 297,563 483,978
MSRs      
Debt Instrument [Roll Forward]      
Beginning balance 2,360,856 1,157,179  
Acquisitions   20,731  
Ending balance 2,640,036 2,360,856 1,157,179
Servicer Advances      
Debt Instrument [Roll Forward]      
Beginning balance 3,382,455 4,060,156  
Acquisitions   0  
Ending balance 3,181,672 3,382,455 4,060,156
Real Estate Securities      
Debt Instrument [Roll Forward]      
Beginning balance 11,780,855 6,694,454  
Acquisitions   0  
Ending balance 22,799,196 11,780,855 6,694,454
Residential mortgage loans and REO      
Debt Instrument [Roll Forward]      
Beginning balance 3,898,059 2,108,007  
Acquisitions   120,702  
Ending balance 5,981,480 3,898,059 2,108,007
Consumer Loans      
Debt Instrument [Roll Forward]      
Beginning balance 936,447 1,242,756  
Acquisitions   0  
Ending balance 816,689 936,447 $ 1,242,756
Repurchase Agreements:      
Debt Instrument [Roll Forward]      
Acquisitions   439,632  
Borrowings 243,316,628 99,662,678  
Repayments (230,954,107) (93,210,903)  
Capitalized deferred financing costs, net of amortization 264 424  
Repurchase Agreements: | Excess MSRs      
Debt Instrument [Roll Forward]      
Acquisitions   0  
Borrowings 0 0  
Repayments 0 0  
Capitalized deferred financing costs, net of amortization 0 0  
Repurchase Agreements: | MSRs      
Debt Instrument [Roll Forward]      
Acquisitions   0  
Borrowings 0 0  
Repayments 0 0  
Capitalized deferred financing costs, net of amortization 0 0  
Repurchase Agreements: | Servicer Advances      
Debt Instrument [Roll Forward]      
Acquisitions   0  
Borrowings 0 0  
Repayments 0 0  
Capitalized deferred financing costs, net of amortization 0 0  
Repurchase Agreements: | Real Estate Securities      
Debt Instrument [Roll Forward]      
Acquisitions   1,957  
Borrowings 207,138,969 90,996,778  
Repayments (196,120,793) (85,912,169)  
Capitalized deferred financing costs, net of amortization (165) (165)  
Repurchase Agreements: | Residential mortgage loans and REO      
Debt Instrument [Roll Forward]      
Acquisitions   437,675  
Borrowings 36,177,659 8,665,900  
Repayments (34,833,314) (7,298,734)  
Capitalized deferred financing costs, net of amortization 429 589  
Repurchase Agreements: | Consumer Loans      
Debt Instrument [Roll Forward]      
Acquisitions   0  
Borrowings 0 0  
Repayments 0 0  
Capitalized deferred financing costs, net of amortization 0 0  
Notes and Bonds Payable:      
Debt Instrument [Roll Forward]      
Borrowings 9,706,864 9,770,909  
Repayments (9,303,527) (9,892,659)  
Discount on borrowings, net of amortization 6,271 1,674  
Unrealized gain on notes, fair value 1,236 684  
Capitalized deferred financing costs, net of amortization (2,422) (4,167)  
Notes and Bonds Payable: | Excess MSRs      
Debt Instrument [Roll Forward]      
Beginning balance 297,563    
Acquisitions 0    
Borrowings 456,741 350,787  
Repayments (537,200) (537,227)  
Discount on borrowings, net of amortization 0 0  
Unrealized gain on notes, fair value 0 0  
Capitalized deferred financing costs, net of amortization 196 25  
Ending balance 217,300 297,563  
Notes and Bonds Payable: | MSRs      
Debt Instrument [Roll Forward]      
Acquisitions 0    
Borrowings 2,456,410 4,212,855  
Repayments (2,178,755) (3,022,785)  
Discount on borrowings, net of amortization 0 0  
Unrealized gain on notes, fair value 0 0  
Capitalized deferred financing costs, net of amortization 1,525 (7,124)  
Notes and Bonds Payable: | Servicer Advances      
Debt Instrument [Roll Forward]      
Beginning balance 3,382,455    
Acquisitions 0    
Borrowings 4,952,585 5,207,084  
Repayments (5,149,327) (5,887,384)  
Discount on borrowings, net of amortization 102 41  
Unrealized gain on notes, fair value 0 0  
Capitalized deferred financing costs, net of amortization (4,143) 2,558  
Ending balance 3,181,672 3,382,455  
Notes and Bonds Payable: | Real Estate Securities      
Debt Instrument [Roll Forward]      
Acquisitions 0    
Borrowings 0 0  
Repayments 0 0  
Discount on borrowings, net of amortization 0 0  
Unrealized gain on notes, fair value 0 0  
Capitalized deferred financing costs, net of amortization 0 0  
Notes and Bonds Payable: | Residential mortgage loans and REO      
Debt Instrument [Roll Forward]      
Acquisitions 209,459    
Borrowings 912,445 183  
Repayments (383,635) (136,947)  
Discount on borrowings, net of amortization 0 0  
Unrealized gain on notes, fair value 1,236 684  
Capitalized deferred financing costs, net of amortization 0 0  
Notes and Bonds Payable: | Consumer Loans      
Debt Instrument [Roll Forward]      
Beginning balance 936,447    
Acquisitions 0    
Borrowings 928,683 0  
Repayments (1,054,610) (308,316)  
Discount on borrowings, net of amortization 6,169 1,633  
Unrealized gain on notes, fair value 0 0  
Capitalized deferred financing costs, net of amortization 0 374  
Ending balance $ 816,689 $ 936,447