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Guarantees, Commitments,And Contingencies - Summary of Companys purchase obligations of future period (Detail) - CAD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Disclosure of Companys purchase obligations of future period [Abstract]    
2022 $ 312,790 $ 243,737
2023 4,144 2,904
2024 $ 126 $ 125