v3.26.1
Financial Instruments and Risk Management (Unrealized Risk Management Positions) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Derivatives, Fair Value [Line Items]    
Risk Management, Current asset $ 226 $ 86
Risk Management, Long-term asset 180 4
Risk Management, Total asset 406 90
Risk Management, Current liability 241 2
Risk Management, Long-term liability 0 13
Risk Management, Total liability 241 15
Risk Management and Other Derivative Guarantee, at Fair Value, Net $ 165 $ 75