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Employment Benefits - Summary of Principal Assumptions on Actuarial Valuation (Details) - yr | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Statement [Line Items] |  |
Future salary and benefit levels | 4.28% | 4.28%
Weighted average duration | 10.39 | 10.77
Bottom of range [member] |  |
Statement [Line Items] |  |
Discount rate | 2.51 | 1.87
Top of range [member] |  |
Statement [Line Items] |  |
Discount rate | 2.60 | 2.12

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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 2021-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_144&doctype=Standard -URIDate 2021-03-24 + Details
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- References No definition available. + Details
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- Definition Weighted average duration. + References No definition available. + Details
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- Details
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- Details
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