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Material accounting policies - Adoption of New or Amended Accounting Standards (Details) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of expected impact of initial application of new standards or interpretations [line items] |  |  |
Other current assets | $ (264) | $ (324) |
Cash | 547 | 99 | $ 289
Capital expenditures | (4,581) | (5,133) |
Other financing activities | $ (24) | $ (31) |

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- Definition The amount of cash on hand and demand deposits. [Refer: Cash on hand] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_45&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of current assets that the entity does not separately disclose in the same statement or note. [Refer: Current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The cash outflow for the purchases of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 16 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_16_a&doctype=Standard -URIDate 2023-03-23 + Details
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