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Non-Operating Income (Expense) - Schedule of Non-Operating Income (Expense) (Detail) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Analysis of income and expense [abstract] |  |
Foreign exchange losses | $ (2) | $ (4)
Gain on debt prepayment option (Note 30(b)) | 0 | 105
Loss on debt redemption or purchase (Note 19(b)) | (11) | (224)
Other | 56 | 26
Total non operating income (expense) | $ 43 | $ (97)

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- References No definition available. + Details
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- Definition The gain (loss) arising from the difference between the carrying amount of the financial liability extinguished and the measurement of the consideration paid (equity instruments issued) to the creditor. [Refer: Carrying amount [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRIC -Number 19 -IssueDate 2020-01-01 -Paragraph 11 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRIC&num=19&code=ifrs-tx-2020-en-r&anchor=para_11&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Section A Statement of cash flows for an entity other than a financial institution -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&doctype=Illustrative%20Examples&dita_xref=IAS07_IE_A_TI -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2020-01-01 -Paragraph 52 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2020-en-r&anchor=para_52_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Gain (loss) on debt prepayment options. + References No definition available. + Details
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- Definition Nonoperating Income (Expense) + References No definition available. + Details
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- Definition Other Nonoperating Income Expense + References No definition available. + Details
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