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Leases - Lease Assets (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure Of Information About Lease Assets Explanatory [Line Items] |  |
Lease assets, beginning balance | $ 1,458 | $ 1,447
Additions | 231 | 317
Depreciation | (302) | (273)
Foreign exchange adjustments and other | 7 | (33)
Lease assets, ending balance | 1,394 | 1,458
Product transportation and storage |  |
Disclosure Of Information About Lease Assets Explanatory [Line Items] |  |
Lease assets, beginning balance | 840 | 912
Additions | 5 | 27
Depreciation | (96) | (98)
Foreign exchange adjustments and other | 3 | (1)
Lease assets, ending balance | 752 | 840
Field equipment and power |  |
Disclosure Of Information About Lease Assets Explanatory [Line Items] |  |
Lease assets, beginning balance | 482 | 377
Additions | 118 | 218
Depreciation | (135) | (111)
Foreign exchange adjustments and other | 3 | (2)
Lease assets, ending balance | 468 | 482
Offshore vessels and equipment |  |
Disclosure Of Information About Lease Assets Explanatory [Line Items] |  |
Lease assets, beginning balance | 71 | 97
Additions | 40 | 49
Depreciation | (51) | (45)
Foreign exchange adjustments and other | 4 | (30)
Lease assets, ending balance | 64 | 71
Office leases and other |  |
Disclosure Of Information About Lease Assets Explanatory [Line Items] |  |
Lease assets, beginning balance | 65 | 61
Additions | 68 | 23
Depreciation | (20) | (19)
Foreign exchange adjustments and other | (3) | 0
Lease assets, ending balance | $ 110 | $ 65

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- Definition Foreign Exchange Adjustments And Other, Right-Of-Use Assets + References No definition available. + Details
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- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_h&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term that do not meet the definition of investment property. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph j -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_j&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_a&doctype=Standard -URIDate 2024-03-27 + Details
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