v3.26.1
Derivatives and Risk Management Activities - Narrative (Details)
bbl in Millions, $ in Millions, $ in Billions
3 Months Ended
Mar. 31, 2026
USD ($)
$ / $
bbl
Mar. 31, 2026
CAD ($)
$ / $
Dec. 31, 2025
USD ($)
Derivatives and Risk Management Activities      
Deferred (gain) loss on accumulated other comprehensive income (loss), net of tax $ (28)    
Fair value, asset 191   $ 4
Commodity derivatives      
Derivatives and Risk Management Activities      
Fair value, asset $ 130   (4)
Crude Oil Purchases | Long      
Derivatives and Risk Management Activities      
Derivative position notional amount (in barrels) | bbl 11.4    
Time Spread on Hedging Anticipated Crude Oil Lease Gathering Purchases | Short      
Derivatives and Risk Management Activities      
Derivative position notional amount (in barrels) | bbl 2.9    
Crude oil basis spread position      
Derivatives and Risk Management Activities      
Derivative position notional amount (in barrels) | bbl 1.6    
Anticipated Net Sales of Crude Oil and NGL Inventory | Short      
Derivatives and Risk Management Activities      
Derivative position notional amount (in barrels) | bbl 9.5    
Foreign currency derivatives      
Derivatives and Risk Management Activities      
Notional amount of derivatives   $ 4.5  
Fair value, asset $ 61   $ 8
Gains recognized $ 53    
Average fixed exchange rate (cad per usd) | $ / $ 1.37 1.37  
Average exchange rate (cad per usd) | $ / $ 1.39 1.39