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Derivative and Hedging Instruments - Summary of Detailed Information about Reconciliation of Accumulated other Comprehensive Income Loss Related to Net Investment Hedges (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of Detailed Information About Reconciliation of Accumulated Other Comprehensive Income Loss Net Investment Hedges [Line Items] |  |
Hedging gains (losses) recognized in AOCI during the year | $ 183 | $ (415)
Foreign exchange translation risk [Member] |  |
Disclosure of Detailed Information About Reconciliation of Accumulated Other Comprehensive Income Loss Net Investment Hedges [Line Items] |  |
Accumulated other comprehensive income (loss), beginning of the year | 5 | 3
Accumulated other comprehensive income (loss), end of the year | 3 | 5
Foreign exchange translation risk [Member] | Hedges of net investment in foreign operations [Member] |  |
Disclosure of Detailed Information About Reconciliation of Accumulated Other Comprehensive Income Loss Net Investment Hedges [Line Items] |  |
Accumulated other comprehensive income (loss), beginning of the year | (137) | 307
Hedging gains (losses) recognized in AOCI during the year | 196 | (444)
Accumulated other comprehensive income (loss), end of the year | $ 59 | $ (137)

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- Definition The amount of accumulated items of income and expense (including reclassification adjustments) that are not recognised in profit or loss as required or permitted by other IFRSs. [Refer: IFRSs [member]; Other comprehensive income] + 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 gains (losses) recognised in other comprehensive income on hedges of net investments in foreign operations, net of tax, before reclassification adjustments. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 39 -IssueDate 2023-01-01 -Paragraph 102 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2023-en-r&anchor=para_102_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 91 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_91_a&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 9 -IssueDate 2023-01-01 -Paragraph 6.5.13 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2023-en-r&anchor=para_6.5.13_a&doctype=Standard -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 24C -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_24C_b_i&doctype=Standard -URIDate 2023-03-23 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 24E -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_24E_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Disclosure of detailed information about reconciliation of accumulated other comprehensive income loss related to net investment hedges. + References No definition available. + Details
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