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Guarantees, Commitments,And Contingencies - Additional Information (Detail) - CAD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of Companys purchase obligations of future period [Abstract] |  |  |
Letters of credit, outstanding | $ 40.1 | $ 42.1 | $ 47.5
Legal provisions |  | $ 0.0 |

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- Definition Disclosure of Company's purchase obligations of future period. + References No definition available. + Details
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- Definition Letters of credit, outstanding. + References No definition available. + Details
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- Definition The amount of provision for legal proceedings. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Section Example 10 A court case -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex10__IAS37_IE_C_ex10_TI -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 87 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_87&doctype=Standard -URIDate 2021-03-24 + Details
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