v3.26.1
Derivatives and Risk Management Activities - Offsetting Asset and Liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Derivative Assets    
Effect of Collateral Netting $ 33 $ 19
Commodity derivatives    
Derivative Assets    
Effect of Collateral Netting 33 19
Derivative Liabilities    
Gross Position - Asset 59 28
Gross Position - Liability (102) (32)
Net Carrying Value Presented on the Balance Sheet, Total (10) 15
Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent | Commodity derivatives    
Derivative Assets    
Gross Position - Asset 20 18
Gross Position - Liability (12) (24)
Effect of Collateral Netting (7) 19
Net Carrying Value Presented on the Balance Sheet 1 13
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent | Commodity derivatives    
Derivative Assets    
Gross Position - Asset 11 1
Gross Position - Liability (3) 0
Effect of Collateral Netting 0 0
Net Carrying Value Presented on the Balance Sheet 8 1
Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent | Commodity derivatives    
Derivative Assets    
Effect of Collateral Netting 40  
Derivative Liabilities    
Gross Position - Asset 28 (1)
Gross Position - Liability (87)  
Net Carrying Value Presented on the Balance Sheet (19) (1)
Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesNoncurrent | Commodity derivatives    
Derivative Assets    
Effect of Collateral Netting 0 0
Derivative Liabilities    
Gross Position - Asset 0 10
Gross Position - Liability 0 (8)
Net Carrying Value Presented on the Balance Sheet $ 0 $ 2