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Other Long-Term Obligations (Detail) - CAD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Schedule of Other Liabilities [Line Items]    
Employee retirement benefits [1] $ 1,326 $ 1,362
Asset retirement obligations and other environmental liabilities [2] 1,713 1,713
Share-based incentive compensation liabilities 111 79
Operating lease liability [3] 138 147
Other obligations 138 596
Total other long-term obligations $ 3,426 $ 3,897
[1] Total recorded employee retirement benefits obligations also included $56 million in current liabilities (2021 - $56 million).
[2] Total asset retirement obligations and other environmental liabilities also included $102 million in current liabilities (2021 - $102 million).
[3] Total operating lease liability also included $95 million in current liabilities (2021 - $102 million). In addition to the total operating lease liability, additional undiscounted commitments for leases not yet commenced totalled $0 million (2021 - $5 million).