v3.26.3
PROPERTY, PLANT AND EQUIPMENT, NET (Details)
$ in Millions
 9 Months Ended
Sep. 30, 2026
CAD ($)
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance $ 45,260
Ending balance 44,804
COST  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 74,948
Acquisitions 8
Additions 3,788
Transfer from E&E (Note 11) 4
Change in Decommissioning Liabilities 20
Divestitures (272)
Exchange Rate Movements and Other 259
Ending balance 78,755
ACCUMULATED DEPRECIATION, DEPLETION AND AMORTIZATION  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance (29,688)
Divestitures 70
Exchange Rate Movements and Other 137
Depreciation, Depletion and Amortization 4,196
Ending balance (33,951)
Crude Oil and Natural Gas Properties  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 40,359
Ending balance 40,026
Crude Oil and Natural Gas Properties | COST  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 65,567
Acquisitions 8
Additions 3,346
Transfer from E&E (Note 11) 4
Change in Decommissioning Liabilities 20
Divestitures (23)
Exchange Rate Movements and Other 87
Ending balance 69,009
Crude Oil and Natural Gas Properties | ACCUMULATED DEPRECIATION, DEPLETION AND AMORTIZATION  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance (25,208)
Divestitures 21
Exchange Rate Movements and Other 55
Depreciation, Depletion and Amortization 3,741
Ending balance (28,983)
Processing, Transportation and Storage Assets  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 132
Ending balance 127
Processing, Transportation and Storage Assets | COST  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 275
Acquisitions 0
Additions 0
Transfer from E&E (Note 11) 0
Change in Decommissioning Liabilities 0
Divestitures 0
Exchange Rate Movements and Other 0
Ending balance 275
Processing, Transportation and Storage Assets | ACCUMULATED DEPRECIATION, DEPLETION AND AMORTIZATION  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance (143)
Divestitures 0
Exchange Rate Movements and Other 0
Depreciation, Depletion and Amortization 5
Ending balance (148)
Refining Assets  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 4,313
Ending balance 4,421
Refining Assets | COST  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 7,147
Acquisitions 0
Additions 427
Transfer from E&E (Note 11) 0
Change in Decommissioning Liabilities 0
Divestitures 0
Exchange Rate Movements and Other 162
Ending balance 7,736
Refining Assets | ACCUMULATED DEPRECIATION, DEPLETION AND AMORTIZATION  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance (2,834)
Divestitures 0
Exchange Rate Movements and Other 85
Depreciation, Depletion and Amortization 396
Ending balance (3,315)
Other Assets  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 456
Ending balance 230
Other Assets | COST  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance 1,959
Acquisitions 0
Additions 15
Transfer from E&E (Note 11) 0
Change in Decommissioning Liabilities 0
Divestitures (249)
Exchange Rate Movements and Other 10
Ending balance 1,735
Other Assets | ACCUMULATED DEPRECIATION, DEPLETION AND AMORTIZATION  
Disclosure of detailed information about property, plant and equipment [line items]  
Beginning balance (1,503)
Divestitures 49
Exchange Rate Movements and Other (3)
Depreciation, Depletion and Amortization 54
Ending balance $ (1,505)