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Property, Plant and Equipment - by segment (Details) - CAD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Property, Plant and Equipment |  |  |
Property, plant and equipment | $ 67,650 | $ 62,654 |
Assets under construction and not subject to depreciation | 7,900 | 6,300 |
Operating segments | Oil Sands |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 51,601 | 47,313 |
Operating segments | Exploration and Production |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 5,614 | 5,181 |
Operating segments | Refining and Marketing |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 9,885 | 9,666 |
Corporate |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 550 | 494 |
Cost |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 125,582 | 127,209 | $ 126,559
Cost | Operating segments | Oil Sands |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 89,230 | 92,601 |
Cost | Operating segments | Exploration and Production |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 17,364 | 16,541 |
Cost | Operating segments | Refining and Marketing |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 17,923 | 17,101 |
Cost | Corporate |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | 1,065 | 966 |
Accumulated provision |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | (57,932) | (64,555) | $ (61,013)
Accumulated provision | Operating segments | Oil Sands |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | (37,629) | (45,288) |
Accumulated provision | Operating segments | Exploration and Production |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | (11,750) | (11,360) |
Accumulated provision | Operating segments | Refining and Marketing |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | (8,038) | (7,435) |
Accumulated provision | Corporate |  |  |
Property, Plant and Equipment |  |  |
Property, plant and equipment | $ (515) | $ (472) |

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- Definition The amount of property, plant and equipment including right-of-use assets whose underlying assets would be presented as property, plant and equipment if they were owned. [Refer: Property, plant and equipment; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_a&doctype=Standard -URIDate 2023-03-23 + Details
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