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