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Debt - Senior Notes (Details) - USD ($)
1 Months Ended 12 Months Ended
May 06, 2021
Feb. 28, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]          
Proceeds from issuance of the Senior Notes, net of discount     $ 490,625,000 $ 0 $ 0
7.25% Senior Notes due 2026 | Senior Notes          
Debt Instrument [Line Items]          
Face amount of debt instrument $ 500,000,000        
7.25% Senior Notes due 2026 | Senior Notes | Subsequent Event          
Debt Instrument [Line Items]          
Face amount of debt instrument   $ 200,000,000      
Stated interest rate (as a percent)   7.25%      
Proceeds from issuance of the Senior Notes, net of discount   $ 200,000,000      
7.25% Senior Notes due 2026 | Senior Notes | On or After May 1, 2023          
Debt Instrument [Line Items]          
Percentage of principal amount redeemable (as a percent) 40.00%        
Redemption price, percentage (as a percent) 107.25%        
7.25% Senior Notes due 2026 | Senior Notes | Prior to May 1, 2023          
Debt Instrument [Line Items]          
Redemption price, percentage (as a percent) 100.00%        
7.25% Senior Notes due 2026 | Senior Notes | Independence Energy Finance LLC          
Debt Instrument [Line Items]          
Face amount of debt instrument $ 500,000,000        
Stated interest rate (as a percent) 7.25%