v3.25.4
Derivatives and Risk Management Activities - Fair Value (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Recurring Fair Value Measurements    
Total net derivative asset/(liability) $ 4 $ 24
Commodity derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) (4) (3)
Interest rate derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) 0 27
Foreign currency derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) 8 0
Level 1    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) (2) 11
Level 1 | Commodity derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) (2) 11
Level 1 | Interest rate derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) 0 0
Level 1 | Foreign currency derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) 0 0
Level 2    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) 6 13
Level 2 | Commodity derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) (2) (14)
Level 2 | Interest rate derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) 0 27
Level 2 | Foreign currency derivatives    
Recurring Fair Value Measurements    
Total net derivative asset/(liability) $ 8 $ 0