XML 192 R155.htm IDEA: XBRL DOCUMENT v3.25.0.1
Financial Instruments - Additional information (Detail)
$ in Millions
Dec. 31, 2024
CAD ($)
Dec. 31, 2023
CAD ($)
share
Dec. 31, 2022
CAD ($)
Disclosure of detailed information about financial instruments [line items]      
Total Debt $ 7,500 $ 7,100  
Cash collateral for risk management contracts price change 18 $ 47  
Discounted credit adjusted risk free rate   5.60%  
WCS Forward Prices      
Disclosure of detailed information about financial instruments [line items]      
Average forward price for Western Canadian Select crude oil for the remaining term (in CAD per barrel) | share   71.86  
WTI Option Implied Volatility      
Disclosure of detailed information about financial instruments [line items]      
Average implied volatility contingent payment percentage   39.40%  
U.S. to Canadian Dollar Foreign Exchange Average Rate Volatility Contingent Payment      
Disclosure of detailed information about financial instruments [line items]      
Average implied volatility contingent payment percentage   5.80%  
Sunrise Oil Sands Partnership      
Disclosure of detailed information about financial instruments [line items]      
Contingent liabilities recognised in business combination 0 $ 164 $ 419
Level 2      
Disclosure of detailed information about financial instruments [line items]      
Fair value debt carried at amortized cost $ 6,900 $ 6,600