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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
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 assumptions are RevPAR growth (detailed on page 157 within ‘Going concern’), terminal growth rates and pre-tax discount rates. |  |
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 discount rates of applied to cash flow projections | pre-tax rates that are based on the Group’s weighted average cost of capital and incorporate adjustments reflecting risks specific to the territory of the CGU. |  |
Gain loss on disposal of software assets |  | $ 8 |
System fund gain or loss |  | $ 4 |
Accumulated depreciation, amortisation and impairment [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment reversal | $ 12 |  |
Cash-generating units [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment Charge | $ 0 |  |
Management agreements [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Weighted average remaining amortisation period | 15 years | 17 years |
Six Senses [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment Charge |  |  | $ 41
Kimpton Regent and Six Senses management agreement portfolios [Member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Explanation of period over which management has projected cash flows |  |  | five-year
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 |  |
Description of level of fair value hierarchy within which fair value measurement is categorised | Where the recoverable amount was measured at fair value, this was categorised as a Level 3 fair value measurement. |  |
Computer software [member] | Costs Previously Incurred To Implement Cloud Computing Arrangements [Member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Gain loss on disposal of software assets |  | $ 12 |
Kimpton Management Agreement Portfolio [Member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Pre-tax discount rate | 14.80% |  |
Explanation of period over which management has projected cash flows | five-year |  | five-year
Long-term growth rate | 1.80% |  |
Post tax discount rate | 10.80% |  | 8.40%
Impairment Charge |  |  | $ 5
Description of basis on which unit's recoverable amount has been determined | valued at value in use (which exceeded fair value less costs of disposal) |  |
Explanation of impairment charge | strong trading conditions in 2022 and significantly improved industry forecasts |  |
Kimpton Management Agreement Portfolio [Member] | Accumulated depreciation, amortisation and impairment [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment reversal | $ 12 |  |
Intangible asset material to entity [member] | Computer software [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill and other intangible assets | 190 |  |
Impairment Charge | 0 | $ 0 |
System fund impairment charge intangible assets and goodwill |  |  | 4
Intangible asset material to entity [member] | Computer software [member] | Internally generated [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Goodwill and other intangible assets | $ 130 |  |
Intangible asset material to entity [member] | Computer software [member] | Remaining Project Value [Member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Weighted average amortisation period | 5 years |  |
Intangible asset material to entity [member] | Computer software [member] | Phase 1 [Member] | Internally generated [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Weighted average amortisation period | 10 years |  |
Weighted average remaining period | 6 years |  |
Intangible asset material to entity [member] | Computer software [member] | Phase 2 [Member] | Internally generated [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Weighted average amortisation period | 7 years |  |
Weighted average remaining period | 6 years |  |
Brands [member] | Kimpton [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Acquisitions of intangible asset | $ 193 |  |
Brands [member] | Six Senses [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Acquisitions of intangible asset | 189 |  |
Regent [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Impairment Charge |  |  | $ 2
Regent [member] | Brands [member] |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |
Acquisitions of intangible asset | $ 57 |  |

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- Definition The explanation of the main events and circumstances that led to the recognition of impairment losses and reversals of impairment losses. [Refer: Impairment loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 131 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_131_b&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 130 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_130_a&doctype=Standard -URIDate 2022-03-24 + Details
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