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INCOME TAXES - Unrecognized deferred tax assets (Details) - CAD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Total unrecognized temporary differences | $ 183 | $ 192
Realized and accrued capital losses in Canada that can be applied against future capital gains |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Total unrecognized temporary differences | 75 | 82
Tax losses in foreign jurisdictions that expire between 2023 and 2040 |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Total unrecognized temporary differences | 68 | 67
Deductible temporary differences in foreign jurisdictions |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Total unrecognized temporary differences | $ 40 | $ 43

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- Definition The amount of deductible temporary differences for which no deferred tax asset is recognised in the statement of financial position. [Refer: Temporary differences [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2021-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2021-en-r&anchor=para_81_e&doctype=Standard -URIDate 2021-03-24 + Details
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