XML 132 R95.htm IDEA: XBRL DOCUMENT v3.25.0.1
Income Taxes - Schedule of Movement in Deferred Income Tax Liabilities and Assets (Detail) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred income tax assets, beginning balance $ (1,489) $ (778)
Deferred income tax liabilities, beginning balance 4,981 4,515
Net deferred income tax liabilities, beginning balance 3,492 3,737
Deferred tax expense (income) recognised in profit or loss 0 0
Deferred income tax assets, ending balance (1,298) (1,489)
Deferred income tax liabilities, ending balance 4,279 4,981
Net deferred income tax liabilities, ending balance 2,981 3,492
Deferred Income Tax Assets    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred tax expense (income) recognised in profit or loss 233 (723)
Charged (Credited) to Other Comprehensive Income (42) 12
Deferred Income Tax Liabilities    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred tax expense (income) recognised in profit or loss (707) 473
Deferred Income Tax Liabilities | Husky Energy, Inc.    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Charged (credited) to acquisitions   (7)
Deferred Income Tax Liabilities | Sunrise Oil Sands Partnership    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Charged (credited) to acquisitions 5  
Net Deferred Income Tax Liabilities    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred tax expense (income) recognised in profit or loss (474) (250)
Charged (Credited) to Other Comprehensive Income (37) 5
Property, plant and equipment    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred income tax liabilities, beginning balance 4,948 4,460
Deferred income tax liabilities, ending balance 4,237 4,948
Property, plant and equipment | Deferred Income Tax Liabilities    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred tax expense (income) recognised in profit or loss (716) 495
Property, plant and equipment | Deferred Income Tax Liabilities | Husky Energy, Inc.    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Charged (credited) to acquisitions   (7)
Property, plant and equipment | Deferred Income Tax Liabilities | Sunrise Oil Sands Partnership    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Charged (credited) to acquisitions 5  
Other    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred income tax liabilities, beginning balance 33 55
Deferred income tax liabilities, ending balance 42 33
Other | Deferred Income Tax Liabilities    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred tax expense (income) recognised in profit or loss 9 (22)
Other | Deferred Income Tax Liabilities | Husky Energy, Inc.    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Charged (credited) to acquisitions   0
Other | Deferred Income Tax Liabilities | Sunrise Oil Sands Partnership    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Charged (credited) to acquisitions 0  
Unused Tax Losses    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred income tax assets, beginning balance (914) (156)
Deferred income tax assets, ending balance (738) (914)
Unused Tax Losses | Deferred Income Tax Assets    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred tax expense (income) recognised in profit or loss 242 (777)
Charged (Credited) to Other Comprehensive Income (66) 19
Other    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred income tax assets, beginning balance (575) (622)
Deferred income tax assets, ending balance (560) (575)
Other | Deferred Income Tax Assets    
Reconciliation Of Changes In Deferred Tax Assets And Liabilities [Roll Forward]    
Deferred tax expense (income) recognised in profit or loss (9) 54
Charged (Credited) to Other Comprehensive Income $ 24 $ (7)