v3.26.1
Derivatives and Risk Management Activities - Narrative (Details)
bbl in Millions, $ in Millions, $ in Billions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
bbl
Jun. 30, 2025
USD ($)
Jun. 30, 2026
CAD ($)
Dec. 31, 2025
USD ($)
Derivatives and Risk Management Activities            
Deferred (gain) loss on accumulated other comprehensive income (loss), net of tax $ (27)   $ (27)      
Fair value, asset (43)   (43)     $ 4
Commodity derivatives            
Derivatives and Risk Management Activities            
Fair value, asset (43)   $ (43)     (4)
Crude Oil Purchases | Long            
Derivatives and Risk Management Activities            
Derivative position notional amount (in barrels) | bbl     8.1      
Time Spread on Hedging Anticipated Crude Oil Lease Gathering Purchases | Short            
Derivatives and Risk Management Activities            
Derivative position notional amount (in barrels) | bbl     2.1      
Crude oil basis spread position            
Derivatives and Risk Management Activities            
Derivative position notional amount (in barrels) | bbl     2.6      
Anticipated Net Sales of Crude Oil and NGL Inventory | Short            
Derivatives and Risk Management Activities            
Derivative position notional amount (in barrels) | bbl     7.8      
Foreign currency derivatives            
Derivatives and Risk Management Activities            
Notional amount of derivatives         $ 4.5  
Fair value, asset           $ 8
Derivative gain (loss) on derivative, net (41) $ (49) $ 12 $ (49)    
Foreign currency derivatives | Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent            
Derivatives and Risk Management Activities            
Fair value, asset $ 20   $ 20