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Post-employee benefit plans - Funded Status of Post-Employment Benefit Plans Cost (Details) - CAD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Disclosure of defined benefit plans [line items] |  |
Effect of asset limit | $ (1,217) | $ (652)
Post-employment benefit asset (liability) | 2,981 | 1,738
FUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Effect of asset limit | (1,217) | (652)
Post-employment benefit asset (liability) | 4,227 | 3,455
PARTIALLY FUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Effect of asset limit | 0 | 0
Post-employment benefit asset (liability) | (1,023) | (1,428)
UNFUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Effect of asset limit | 0 | 0
Post-employment benefit asset (liability) | (223) | (289)
Plan surplus (deficit) |  |
Disclosure of defined benefit plans [line items] |  |
Present value of post- employment benefit obligations | (19,669) | (26,001)
Fair value of plan assets | 23,867 | 28,391
Plan surplus (deficit) | 4,198 | 2,390
Plan surplus (deficit) | FUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Present value of post- employment benefit obligations | (18,016) | (23,872)
Fair value of plan assets | 23,460 | 27,979
Plan surplus (deficit) | 5,444 | 4,107
Plan surplus (deficit) | PARTIALLY FUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Present value of post- employment benefit obligations | (1,430) | (1,840)
Fair value of plan assets | 407 | 412
Plan surplus (deficit) | (1,023) | (1,428)
Plan surplus (deficit) | UNFUNDED |  |
Disclosure of defined benefit plans [line items] |  |
Present value of post- employment benefit obligations | (223) | (289)
Fair value of plan assets | 0 | 0
Plan surplus (deficit) | $ (223) | $ (289)

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- Definition Effect Of Asset Limit + References No definition available. + Details
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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 amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 140 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_140_a&doctype=Standard -URIDate 2021-03-24 + 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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