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Debt and Credit Arrangements - Senior Secured and Unsecured Notes (Details) - USD ($)
 3 Months Ended 6 Months Ended
Dec. 22, 2022
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Debt Instrument            
Unamortized discount   $ 28,500,000   $ 28,500,000   $ 29,900,000
Payments for debt issuance costs       133,400,000 $ 0  
Financing costs amortization   4,400,000 $ 700,000 7,200,000 $ 1,400,000  
Secured And Unsecured Debt            
Debt Instrument            
Redemption price, percentage of principal amount redeemed (percent) 40.00%          
Redemption price (percent) 101.00%          
Unamortized discount $ 30,000,000.0          
Deferred debt issuance cost 36,800,000          
Payments for debt issuance costs   0.0   32,000,000.0    
Financing costs amortization   900,000   1,900,000    
Senior Secured Notes Due 2030 | Secured Debt            
Debt Instrument            
Principal amount $ 1,460,000,000 $ 1,460,000,000   $ 1,460,000,000   1,460,000,000
Debt instrument stated interest rate (percent) 7.50% 7.50%   7.50%    
Issue price (percent) 98.661%          
Senior Unsecured Notes Due 2031 | Unsecured Debt            
Debt Instrument            
Principal amount $ 510,000,000.0 $ 510,000,000.0   $ 510,000,000.0   $ 510,000,000.0
Debt instrument stated interest rate (percent) 9.50% 9.50%   9.50%    
Issue price (percent) 97.949%