v3.25.3
Derivatives - Fair Value and Classification (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Derivatives, Fair Value [Line Items]    
Total assets $ 474 $ 1,636
Total liabilities 392 27
Interest rate swaps | Derivative assets    
Derivatives, Fair Value [Line Items]    
Total assets 70 150
Interest rate swaps | Noncurrent derivative assets    
Derivatives, Fair Value [Line Items]    
Total assets 359 1,459
Interest rate swaps | Accrued and other liabilities    
Derivatives, Fair Value [Line Items]    
Total liabilities 17 1
Interest rate swaps | Other noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Total liabilities 242 2
Natural gas supply contracts | Derivative assets    
Derivatives, Fair Value [Line Items]    
Total assets 20 4
Natural gas supply contracts | Noncurrent derivative assets    
Derivatives, Fair Value [Line Items]    
Total assets 25 23
Natural gas supply contracts | Accrued and other liabilities    
Derivatives, Fair Value [Line Items]    
Total liabilities 38 12
Natural gas supply contracts | Other noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Total liabilities $ 95 $ 12