Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Narrative (Details)

v3.21.2
Borrowings - Narrative (Details) - USD ($)
 6 Months Ended
Jun. 30, 2021
Jun. 21, 2021
May 03, 2021
Dec. 31, 2020
Sep. 30, 2020
Line of Credit Facility [Line Items]          
Total principal outstanding $ 2,902,641,000     $ 3,012,641,000  
Period prior to maturity 182 days        
Unsecured debt          
Line of Credit Facility [Line Items]          
Debt instrument aggregate principal amount   $ 650,000,000.0 $ 100,000,000.0    
Minimum          
Line of Credit Facility [Line Items]          
Outstanding principal amount of issuance $ 100,000,000.0        
New Credit Facility          
Line of Credit Facility [Line Items]          
Credit facility borrowing base 1,600,000,000        
Total principal outstanding $ 875,000,000.0        
Interest rate at period end (as a percent) 2.61%        
Letters of credit outstanding $ 24,000,000.0        
New Credit Facility | Federal Funds Rate          
Line of Credit Facility [Line Items]          
Debt instrument interest rate (as a percent) 0.50%        
New Credit Facility | LIBOR          
Line of Credit Facility [Line Items]          
Debt instrument interest rate (as a percent) 1.00%        
New Credit Facility | Minimum          
Line of Credit Facility [Line Items]          
Unused capacity, commitment fee (as a percent) 0.375%        
New Credit Facility | Minimum | Base Rate          
Line of Credit Facility [Line Items]          
Debt instrument interest rate (as a percent) 1.00%        
New Credit Facility | Minimum | Eurodollar          
Line of Credit Facility [Line Items]          
Debt instrument interest rate (as a percent) 2.00%        
New Credit Facility | Maximum          
Line of Credit Facility [Line Items]          
Unused capacity, commitment fee (as a percent) 0.50%        
New Credit Facility | Maximum | Base Rate          
Line of Credit Facility [Line Items]          
Debt instrument interest rate (as a percent) 2.00%        
New Credit Facility | Maximum | Eurodollar          
Line of Credit Facility [Line Items]          
Debt instrument interest rate (as a percent) 3.00%        
6.25% Senior Notes          
Line of Credit Facility [Line Items]          
Total principal outstanding $ 542,720,000 $ 542,700,000   542,720,000  
Debt instrument, interest rate, stated (as a percent) 6.25%        
6.25% Senior Notes | Unsecured debt          
Line of Credit Facility [Line Items]          
Debt instrument, interest rate, stated (as a percent) 6.25%        
6.125% Senior Notes due 2024          
Line of Credit Facility [Line Items]          
Total principal outstanding $ 460,241,000     460,241,000  
Debt instrument, interest rate, stated (as a percent) 6.125%        
6.125% Senior Notes due 2024 | Unsecured debt          
Line of Credit Facility [Line Items]          
Debt instrument, interest rate, stated (as a percent) 6.125%        
Second Lien Notes          
Line of Credit Facility [Line Items]          
Total principal outstanding $ 516,659,000     $ 516,659,000  
Debt instrument, interest rate, stated (as a percent) 9.00%        
Debt instrument aggregate principal amount         $ 300,000,000.0