Annual report pursuant to Section 13 and 15(d)

DEBT OBLIGATIONS - Narrative (Details)

v3.20.4
DEBT OBLIGATIONS - Narrative (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Sep. 16, 2020
USD ($)
May 19, 2020
USD ($)
Aug. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
agreement
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]            
Face amount of debt       $ 25,219,365    
(Gain) loss on extinguishment of debt       66,233 $ 8,532 $ 624
Interest expense       584,469 933,751 $ 606,433
2020 Term Loan            
Debt Instrument [Line Items]            
Debt instrument, term   3 years        
Principal amount   $ 600,000        
Interest rate, stated percentage   11.00%        
Expiration period   3 years        
Fair value of warrants issued   $ 53,500        
Prepayment of term loan     $ 51,000      
(Gain) loss on extinguishment of debt     $ 5,700      
Interest expense       25,441 $ 0  
Secured Financing Agreements            
Debt Instrument [Line Items]            
Face amount of debt       17,600,000    
Secured Financing Agreements            
Debt Instrument [Line Items]            
Face amount of debt       17,552,126    
Senior Notes            
Debt Instrument [Line Items]            
Issuance fees       $ 8,400    
Senior Notes | 2025 Senior Notes            
Debt Instrument [Line Items]            
Face amount of debt $ 550,000          
Interest rate, stated percentage 6.25%          
(Gain) loss on extinguishment of debt $ 61,100          
Redemption maximum principal amount percentage 0.40          
Debt redemption percentage 106.25%     101.00%    
Borrowings under secured financing agreements $ 544,500          
Issuance fees       $ 9,000    
Interest expense       $ 10,000    
Debt instrument, restrictive covenants, minimum total unencumbered assets maintenance requirement       1.20    
Stockholders' Equity | Counterpary Concentration Risk Exceeding 10% | Repurchase Agreements            
Debt Instrument [Line Items]            
Number of outstanding repurchase agreements | agreement       0