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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, 2020 | Dec. 31, 2019
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | $ 1,376 | $ 1,143
Additions | 52 | 108
Impairment charge |  | 49
Exchange and other adjustments | 7 | 1
Ending balance | 1,293 | 1,376
Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 1,977 | 1,581
Acquisition of businesses (note [xx]) |  | 304
Additions | 52 | 108
Capitalised interest |  | 5
Disposals | (29) | (22)
Exchange and other adjustments | 9 | 1
Ending balance | 2,009 | 1,977
Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (601) | (438)
Provided | (38) | (40)
System Fund expense | (53) | (47)
Impairment charge | (48) | (99)
System Fund Impairment Charge Intangible Assets And Goodwill | (4) |
Disposals | 29 | 22
Exchange and other adjustments | (1) | 1
Ending balance | (716) | (601)
Goodwill [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 339 | 313
Ending balance | 346 | 339
Goodwill [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 529 | 455
Acquisition of businesses (note [xx]) |  | 70
Additions |  | 4
Exchange and other adjustments | 8 |
Ending balance | 537 | 529
Goodwill [member] | Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (190) | (142)
Impairment charge |  | (49)
Exchange and other adjustments | (1) | 1
Ending balance | (191) | (190)
Brands [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 439 | 250
Ending balance | 439 | 439
Brands [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 439 | 250
Acquisition of businesses (note [xx]) |  | 189
Ending balance | 439 | 439
Software [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 524 | 500
Ending balance | 484 | 524
Software [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 864 | 781
Additions | 50 | 98
Capitalised interest |  | 5
Disposals | (29) | (22)
Exchange and other adjustments | 1 | 2
Ending balance | 886 | 864
Software [member] | Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (340) | (281)
Provided | (36) | (35)
System Fund expense | (51) | (46)
System Fund Impairment Charge Intangible Assets And Goodwill | (4) |
Disposals | 29 | 22
Ending balance | (402) | (340)
Management contracts [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 59 | 67
Ending balance | 10 | 59
Management contracts [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 122 | 77
Acquisition of businesses (note [xx]) |  | 45
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 | (63) | (10)
Provided | (1) | (3)
Impairment charge | (48) | (50)
Ending balance | (112) | (63)
Other intangibles [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 15 | 13
Ending balance | 14 | 15
Other intangibles [member] | Cost [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 23 | 18
Additions | 2 | 6
Exchange and other adjustments |  | (1)
Ending balance | 25 | 23
Other intangibles [member] | Amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (8) | (5)
Provided | (1) | (2)
System Fund expense | (2) | (1)
Ending balance | $ (11) | $ (8)

X
- Definition The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; 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 i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; 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 vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_vi&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_ii&doctype=Standard -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_vii&doctype=Standard -URIDate 2020-01-01 + Details
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