v3.25.2
Borrowings and Other Debt Obligations - Narrative (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Oct. 27, 2021
USD ($)
Sep. 30, 2021
USD ($)
Short-term Debt [Line Items]          
Letters of credit outstanding, amount $ 412 $ 412 $ 382    
Performance Letters of Credit          
Short-term Debt [Line Items]          
Letters of credit outstanding, amount 253 253 279    
Financial Letters of Credit          
Short-term Debt [Line Items]          
Letters of credit outstanding, amount 6 6 12    
Uncommitted Letters of Credit          
Short-term Debt [Line Items]          
Letters of credit outstanding, amount 153 153 91    
Letters of credit outstanding, cash collateral 48 48 49    
Senior Notes | 2028 Senior Secured Notes          
Short-term Debt [Line Items]          
Stated interest rate on debt         6.50%
Face amount of debt         $ 500
Senior Notes | 2030 Senior Notes          
Short-term Debt [Line Items]          
Stated interest rate on debt       8.625%  
Face amount of debt       $ 1,600  
Principal amount repurchased 27 61      
Unpaid principal balance 1,540 1,540 1,600    
Unamortized deferred issuance cost 10 10 11    
Line of Credit          
Short-term Debt [Line Items]          
Borrowings outstanding 0 0 0    
Line of Credit | Amended LC Credit Agreement          
Short-term Debt [Line Items]          
Credit agreement, maximum capacity 720 720 $ 720    
Credit Agreement Minimum Liquidity Requirement 250 250      
Credit Agreement Minimum Liquidity Requirement, Increase Limit $ 400 $ 400      
Debt instrument, covenant, minimum interest coverage ratio 2.50 2.50      
Debt Instrument, Covenant, Maximum Net Leverage Ratio 3.50 3.50      
Debt Instrument, Covenant, Maximum Secured Net Leverage Ratio 1.50 1.50