Post-Employment Benefits - Summary of Weighted Average Principal Assumptions Used to Determine Defined Benefit Obligation (Detail)	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Disclosure of defined benefit plans [line items]
Discount rate	3.14%	4.14%	3.72%
Pension plan [member] \| Canada plan [member]
Disclosure of defined benefit plans [line items]
Discount rate	2.80%	3.10%
Rate of compensation increase	2.00%	2.30%
Other post employment benefit plans [member] \| Canada plan [member]
Disclosure of defined benefit plans [line items]
Discount rate	2.70%	3.00%
Rate of compensation increase	2.00%	2.30%

The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2019-01-01
-Paragraph 144
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_144&doctype=Standard
-URIDate 2019-03-27

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- Definition

The expected rate of increases in pension that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]]

+ References

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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