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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).

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