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Other Liabilities - Summary of Other Liabilities (Detail) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Miscellaneous Noncurrent Liabilities [Abstract]
Employee Long-Term Incentives	$ 33	$ 103
Pension and Other Post-Employment Benefit Plan (Note 29)	91	73
Onerous Contract Provisions	39	46
Other	18	19
Other Liabilities	$ 181	$ 241

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- Definition

Net liabilities of defined benefit plan and other post employment benefit plan.

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Non current liabilities from share-based payment transactions 2011.

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- Definition

Other noncurrent liabilities other.

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- Definition

The amount of provision for onerous contracts. An onerous contract is a contract in which the unavoidable costs of meeting the obligation under the contract exceed the economic benefits expected to be received under it. [Refer: Other provisions]

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- Definition

The amount of non-current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Non-current liabilities]

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