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Income Taxes - Schedule Of Provision For Income Tax (Details) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Current      
Other taxes $ 16 $ 13 $ 6
Current income tax 2,906 1,848 (257)
Deferred      
Deferred income tax 302 399 (181)
Deferred income tax (139) 399 (181)
Income tax 2,767 2,247 (438)
North America      
Current      
Current corporate income tax 2,789 1,841 (245)
North Sea      
Current      
Current corporate income tax 69 7 (4)
Current PRT - North Sea (42) (34) (31)
Deferred      
Deferred PRT – North Sea (441) 0 0
Offshore Africa      
Current      
Current corporate income tax $ 74 $ 21 $ 17