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Employees - Summary of Assumptions, Weighted by Liabilities for Valuation of Defined Benefit Plans Which cover Approximately 00% of Total Pension Plan (Detail) | Dec. 31, 2020 | Dec. 31, 2019
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Defined benefit pension plans [Member] |  |
Disclosure of defined benefit plans [line items] |  |
Discount rate | 1.30% | 1.90%
Inflation | 2.20% | 2.30%
Rate of increase in salaries | 2.90% | 2.90%
Rate of increase for pensions in payment (where provided) | 2.10% | 2.20%
Rate of increase for pensions in deferment (where provided) | 2.30% | 2.40%
Other Post-Employment Benefit Plans [Member] |  |
Disclosure of defined benefit plans [line items] |  |
Discount rate | 3.30% | 3.90%
Rate of increase in salaries | 3.00% | 3.00%
Long-term medical cost inflation | 5.10% | 5.40%

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- Definition 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]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The expected rate of inflation 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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The expected rate of salary increases 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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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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. + Details
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- Definition Actuarial assumption of increase for pensions in deferment where provided + References No definition available. + Details
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- Definition Actuarial assumption of increase for pensions in payment where provided. + References No definition available. + Details
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- Definition Actuarial assumption of long term medical cost inflation. + References No definition available. + Details
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- Details
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- Details
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