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Property, Plant and Equipment - Detailed information about property, plant and equipment (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | $ 64,859 |
Property, plant and equipment at end of period | 64,581 | $ 64,859
North Sea |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Recoverability charge | 436 | 1,620
Operating segments | North America |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 25,240 |
Property, plant and equipment at end of period | 24,643 | 25,240
Operating segments | North Sea |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 152 |
Property, plant and equipment at end of period | 224 | 152
Operating segments | Offshore Africa |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 1,055 |
Property, plant and equipment at end of period | 1,051 | 1,055
Operating segments | Oil Sands Mining and Upgrading |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 38,020 |
Property, plant and equipment at end of period | 38,270 | 38,020
Operating segments | Midstream and Refining |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 276 |
Property, plant and equipment at end of period | 271 | 276
Head Office |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 116 |
Property, plant and equipment at end of period | 122 | 116
Cost |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 142,407 | 137,082
Additions/Acquisitions | 5,824 | 5,356
Transfers from exploration and evaluation assets | 63 | 71
Derecognitions | (1,051) | (864)
Disposals |  | (35)
Foreign exchange adjustments and other | 320 | (797)
Property, plant and equipment at end of period | 146,923 | 142,407
Cost | Operating segments | North America |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 81,075 | 77,834
Additions/Acquisitions | 2,951 | 3,564
Transfers from exploration and evaluation assets | 38 | 71
Derecognitions | (581) | (394)
Disposals |  | 0
Foreign exchange adjustments and other | 0 | 0
Property, plant and equipment at end of period | 83,483 | 81,075
Cost | Operating segments | North Sea |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 8,258 | 7,438
Additions/Acquisitions | 558 | 304
Transfers from exploration and evaluation assets | 0 | 0
Derecognitions | 0 | (1)
Disposals |  | 0
Foreign exchange adjustments and other | 210 | (517)
Property, plant and equipment at end of period | 8,606 | 8,258
Cost | Operating segments | Offshore Africa |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 4,332 | 3,980
Additions/Acquisitions | 187 | 75
Transfers from exploration and evaluation assets | 0 | 0
Derecognitions | 0 | 0
Disposals |  | 0
Foreign exchange adjustments and other | 110 | (277)
Property, plant and equipment at end of period | 4,409 | 4,332
Cost | Operating segments | Oil Sands Mining and Upgrading |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 47,732 | 46,856
Additions/Acquisitions | 2,088 | 1,380
Transfers from exploration and evaluation assets | 25 |
Derecognitions | (470) | (469)
Disposals |  | (35)
Foreign exchange adjustments and other | 0 | 0
Property, plant and equipment at end of period | 49,375 | 47,732
Cost | Operating segments | Midstream and Refining |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 474 | 466
Additions/Acquisitions | 10 | 8
Transfers from exploration and evaluation assets | 0 | 0
Derecognitions | 0 | 0
Disposals |  | 0
Foreign exchange adjustments and other | 0 | 0
Property, plant and equipment at end of period | 484 | 474
Cost | Head Office |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | 536 | 508
Additions/Acquisitions | 30 | 25
Transfers from exploration and evaluation assets | 0 | 0
Derecognitions | 0 | 0
Disposals |  | 0
Foreign exchange adjustments and other | 0 | (3)
Property, plant and equipment at end of period | 566 | 536
Accumulated depletion and depreciation |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | (77,548) | (70,682)
Expense | 5,704 | 5,489
Derecognitions | 1,051 | 864
Disposals |  | 2
Recoverability charge | 436 | 1,620
Foreign exchange adjustments and other | (295) | 623
Property, plant and equipment at end of period | (82,342) | (77,548)
Accumulated depletion and depreciation | Operating segments | North America |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | (55,835) | (52,732)
Expense | 3,592 | 3,502
Derecognitions | 581 | 394
Disposals |  | 0
Recoverability charge | 0 | 0
Foreign exchange adjustments and other | (6) | (5)
Property, plant and equipment at end of period | (58,840) | (55,835)
Accumulated depletion and depreciation | Operating segments | North Sea |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | (8,106) | (5,951)
Expense | 40 | 117
Derecognitions | 0 | 1
Disposals |  | 0
Recoverability charge | 436 | 1,620
Foreign exchange adjustments and other | (200) | 419
Property, plant and equipment at end of period | (8,382) | (8,106)
Accumulated depletion and depreciation | Operating segments | Offshore Africa |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | (3,277) | (2,923)
Expense | 177 | 148
Derecognitions | 0 | 0
Disposals |  | 0
Recoverability charge | 0 | 0
Foreign exchange adjustments and other | (96) | 206
Property, plant and equipment at end of period | (3,358) | (3,277)
Accumulated depletion and depreciation | Operating segments | Oil Sands Mining and Upgrading |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | (9,712) | (8,499)
Expense | 1,856 | 1,684
Derecognitions | 470 | 469
Disposals |  | 2
Recoverability charge | 0 | 0
Foreign exchange adjustments and other | 7 | 0
Property, plant and equipment at end of period | (11,105) | (9,712)
Accumulated depletion and depreciation | Operating segments | Midstream and Refining |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | (198) | (183)
Expense | 15 | 15
Derecognitions | 0 | 0
Disposals |  | 0
Recoverability charge | 0 | 0
Foreign exchange adjustments and other | 0 | 0
Property, plant and equipment at end of period | (213) | (198)
Accumulated depletion and depreciation | Head Office |  |
Reconciliation of changes in property, plant and equipment [abstract] |  |
Property, plant and equipment at beginning of period | (420) | (394)
Expense | 24 | 23
Derecognitions | 0 | 0
Disposals |  | 0
Recoverability charge | 0 | 0
Foreign exchange adjustments and other | 0 | 3
Property, plant and equipment at end of period | $ (444) | $ (420)

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- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e_vii&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 75 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_75_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -Clause viii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease in property, plant and equipment resulting from retirements. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e&doctype=Standard -URIDate 2023-03-23 + Details
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