v3.25.2
Debt Instruments - Senior Secured Notes (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Less: unamortized debt issuance costs $ (42) $ (46)
Plus: unamortized premium 23 27
Senior Notes    
Debt Instrument [Line Items]    
Accrued PIK interest 112 105
Less: unamortized debt issuance costs (36) (40)
Plus: unamortized premium 23 27
Outstanding principal, net of debt issuance costs 4,439 4,345
Notes due December 1, 2028 (the "2028 Senior Secured Notes") | Senior Notes    
Debt Instrument [Line Items]    
Total principal amount $ 559 611
Year 1 PIK Interest Rate 12.00%  
Debt instrument, interest rate, cash rate year two 9.00%  
Thereafter Cash Interest Rate 9.00%  
Notes due June 1, 2030 (the "2030 Senior Secured Notes") | Senior Notes    
Debt Instrument [Line Items]    
Total principal amount $ 1,660 1,660
Year 1 PIK Interest Rate 13.00%  
Debt instrument, interest rate, cash rate year two 11.00%  
Thereafter Cash Interest Rate 9.00%  
Notes due June 1, 2031 (the "2031 Senior Secured Notes") | Senior Notes    
Debt Instrument [Line Items]    
Total principal amount $ 2,121 1,982
Year 1 PIK Interest Rate 14.00%  
Debt instrument, interest rate, cash rate year two 0.00%  
Thereafter Cash Interest Rate 9.00%  
Senior Secured Notes | Senior Notes    
Debt Instrument [Line Items]    
Total principal amount $ 4,452 $ 4,358