Post-Employment Benefits - Summary of Defined Benefit Plan Expense (Detail) - CAD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Jan. 31, 2023 |
Oct. 31, 2022 |
Jan. 31, 2022 |
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| Pension plan [member] | |||
| Disclosure of defined benefit plans [line items] | |||
| Current service cost | $ 53 | $ 67 | $ 66 |
| Gain on settlements | 1 | ||
| Net interest (income) expense | (21) | (14) | (14) |
| Interest expense on effect of asset ceiling | 1 | ||
| Plan administration costs | 2 | 2 | 2 |
| Net defined benefit plan expense (income) recognized in net income | 34 | 57 | 54 |
| Other Post Employment Benefit Plans [member] | |||
| Disclosure of defined benefit plans [line items] | |||
| Current service cost | 1 | 2 | 2 |
| Past service cost | (8) | ||
| Net interest (income) expense | 6 | 5 | 5 |
| Net defined benefit plan expense (income) recognized in net income | $ 7 | $ 7 | $ (1) |
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- Definition Interest expense on effect of asset ceiling net defined liability asset. No definition available.
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- Definition Net defined benefit plan expense recognized in net income. No definition available.
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. No definition available.
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from settlements. Settlements are transactions that eliminate all further legal or constructive obligations for part or all of the benefits provided under a defined benefit plan, other than a payment of benefits to, or on behalf of, employees that is set out in the terms of the plan and included in the actuarial assumptions. [Refer: Net defined benefit liability (asset); Defined benefit plans [member]; Actuarial assumptions [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from past service cost. Past service cost is the change in the present value of the defined benefit obligation for employee service in prior periods, resulting from a plan amendment (the introduction or withdrawal of, or changes to, a defined benefit plan) or a curtailment (a significant reduction by the entity in the number of employees covered by a plan). [Refer: Net defined benefit liability (asset); Defined benefit plans [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan. [Refer: Net defined benefit liability (asset)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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