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Goodwill and Other Intangible Assets - Summary of Terminal Growth Rates and Discount Rates Used in Impairment Tests (Detail) | Dec. 31, 2021 | Dec. 31, 2020
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Americas [member] |  |
Disclosure of information for cash-generating units [Line Items] |  |
Terminal growth rate | 2.00% | 1.70%
Pre-tax discount rate | 10.20% | 8.50%
EMEAA [member] |  |
Disclosure of information for cash-generating units [Line Items] |  |
Terminal growth rate | 2.20% | 1.90%
Pre-tax discount rate | 12.80% | 12.10%
Greater China [member] |  |
Disclosure of information for cash-generating units [Line Items] |  |
Terminal growth rate | 2.50% | 2.50%
Pre-tax discount rate | 12.60% | 13.30%

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- Definition The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 134 -Subparagraph d -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_134_d_v&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 134 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_134_e_v&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 134 -Subparagraph d -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_134_d_iv&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 134 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_134_e_iv&doctype=Standard -URIDate 2021-03-24 + Details
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