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Goodwill and Other Intangible Assets - Summary of Goodwill and Other Intangible Assets (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | $ 1,099 | $ 1,144
Ending balance | 1,042 | 1,099
Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 1,926 | 1,925
Additions | 49 | 53
Fully amortised assets written off | (50) | (55)
Disposals | (4) | (1)
Exchange and other adjustments | (5) | 4
Ending balance | 1,916 | 1,926
Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (827) | (781)
Fully amortised assets written off | 50 | 55
Disposals | 4 | 1
Exchange and other adjustments | 1 | (4)
Provided | (19) | (21)
System Fund expense | (78) | (77)
Impairment charge | (2) |
System Fund impairment charge | (3) |
Ending balance | (874) | (827)
Goodwill [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 336 | 335
Ending balance | 331 | 336
Goodwill [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 516 | 513
Disposals |  | 0
Exchange and other adjustments | (5) | 3
Ending balance | 511 | 516
Goodwill [member] | Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (180) | (178)
Disposals |  | 0
Exchange and other adjustments |  | (2)
Ending balance | (180) | (180)
Brands [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 439 | 439
Ending balance | 439 | 439
Brands [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 439 | 439
Ending balance | 439 | 439
Brands [member] | Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 0 |
Ending balance | 0 | 0
Software [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 297 | 339
Ending balance | 247 | 297
Software [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 825 | 825
Additions | 48 | 52
Fully amortised assets written off | (49) | (52)
Disposals | (4) | (1)
Exchange and other adjustments |  | 1
Ending balance | 820 | 825
Software [member] | Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (528) | (486)
Fully amortised assets written off | 49 | 52
Disposals | 4 | 1
Exchange and other adjustments | 1 | (1)
Provided | (17) | (18)
System Fund expense | (77) | (76)
Impairment charge | (2) |
System Fund impairment charge | (3) |
Ending balance | (573) | (528)
Management contracts [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 19 | 21
Ending balance | 18 | 19
Management contracts [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 122 | 122
Ending balance | 122 | 122
Management contracts [member] | Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (103) | (101)
Exchange and other adjustments |  | (1)
Provided | (1) | (1)
Ending balance | (104) | (103)
Other intangibles [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 8 | 10
Ending balance | 7 | 8
Other intangibles [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 24 | 26
Additions | 1 | 1
Fully amortised assets written off | (1) | (3)
Ending balance | 24 | 24
Other intangibles [member] | Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (16) | (16)
Fully amortised assets written off | 1 | 3
Exchange and other adjustments |  | 0
Provided | (1) | (2)
System Fund expense | (1) | (1)
Ending balance | $ (17) | $ (16)

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- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The decrease in intangible assets and goodwill resulting from disposals. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_ii&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_vii&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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