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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill and other intangible assets | $ 1,293 | $ 1,376 | $ 1,143
Information whether recoverable amount of asset is fair value less costs of disposal or value in use | The recoverable amounts of the CGUs, or groups of CGUs, have been determined from value in use calculations. |  |
Description of key assumptions on which management has based cash flow projections | The key assumption is RevPAR growth and the expected recovery period |  |
Description of growth rates used to extrapolate cash flow projections | terminal growth rates that do not exceed the average long-term growth rates for the relevant markets. |  |
Description of management's approach to determining values assigned to key assumptions | Base Case scenario and Downside Case scenario |  |
Description of discount rates of applied to cash flow projections | pre-tax rates that are based on the Group’s weighted average cost of capital adjusted to reflect the risks specific to the business model and territory of the CGU being tested. |  |
Cash-generating units [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment Charge | $ 0 |  |
Impairment testing of goodwill and brands (excluding the UK portfolio) [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Contingency factor applied to reduce cash flow projections | 10.00% |  |
Explanation of period over which management has projected cash flows | five-year |  |
Management agreements [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Weighted average remaining amortisation period | 18 years | 26 years |
Kimpton [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment Charge | $ 5 |  |
Six Senses [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment Charge | 41 |  |
Management agreements and Kimpton [Member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Discount rate for cash flow projections |  | 8.00% |
Kimpton Management Agreements [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment Charge |  | $ 50 |
Kimpton Regent and Six Senses management agreement portfolios [Member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Amount by which unit's recoverable amount exceeds its carrying amount | 10 |  |
Impairment Charge | $ 48 |  |
Description of basis on which unit's recoverable amount has been determined | valued at the higher of value in use and fair value less costs of disposal |  |
Guest Reservation System [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Amortisation method, intangible assets other than goodwill | straight-line |  |
Intangible asset material to entity [member] | Guest Reservation System [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill and other intangible assets | $ 274 |  |
Amortisation method, intangible assets other than goodwill | not yet being amortised as it has not been completed |  |
System Fund Impairment Charge Intangible Assets And Goodwill | $ 4 |  |
Intangible asset material to entity [member] | Guest Reservation System [member] | Phase 1 [Member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Weighted average amortisation period | 10 years |  |
Weighted average remaining period | 8 years |  |
Intangible asset material to entity [member] | Guest Reservation System [member] | Phase 2 [Member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill and other intangible assets | $ 141 |  |
Regent [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment Charge | $ 2 |  |

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- Definition The amortisation method used for intangible assets other than goodwill with finite useful lives. [Refer: Intangible assets other than goodwill; Depreciation and amortisation expense] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount by which a cash-generating unit's (group of units') recoverable amount exceeds its carrying amount. [Refer: Carrying amount [member]; Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph f -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_f_i&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 135 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_135_e_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The description of management's approach to determining the value (or values) assigned to key assumptions, whether those value(s) reflect past experience or, if appropriate, are consistent with external sources of information and, if not, how and why they differ from past experience or external sources of information. Key assumptions are those to which the unit’s (group of units’) recoverable amount is most sensitive. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_d_ii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 135 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_135_d&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_e_ii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The explanation of the period over which management has projected cash flows based on financial budgets/forecasts approved by management including, when a period greater than five years is used for a cash-generating unit (group of units), an explanation of why that longer period is justified. [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_d_iii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph e -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_e_iii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2020-01-01 + Details
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