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Post-employment benefit plans - Funded Status of Post-Employment Benefit Plans Cost (Details) - Plan asset (deficit) - CAD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of defined benefit plans [line items] |  |
Present value of post-employment benefit obligations | $ (26,001) | $ (28,749)
Fair value of plan assets | 28,391 | 28,129
Plan surplus (deficit) | 2,390 | (620)
FUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Present value of post-employment benefit obligations | (23,872) | (26,421)
Fair value of plan assets | 27,979 | 27,727
Plan surplus (deficit) | 4,107 | 1,306
PARTIALLY FUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Present value of post-employment benefit obligations | (1,840) | (2,011)
Fair value of plan assets | 412 | 402
Plan surplus (deficit) | (1,428) | (1,609)
UNFUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Present value of post-employment benefit obligations | (289) | (317)
Fair value of plan assets | 0 | 0
Plan surplus (deficit) | $ (289) | $ (317)

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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 57 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_57_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 57 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_57_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 57 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_57_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Details
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- Details
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- Details
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- Details
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