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Leases - Additional Information (Detail) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 01, 2022 USD ($) | Dec. 31, 2021 USD ($) Leases | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Jan. 01, 2020 USD ($)
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Cash payments leases |  | $ 87 | $ 104 | $ 159 |
Weighted average remaining lease term |  | 56 years |  |  |
Percentage of right of use assets value |  | 94.00% |  |  |
Cash payments leases-financing activities |  | $ 32 | 65 | 59 |
Cash payments leases-operating activities |  | 55 | 39 | 100 |
Impairment loss |  |  | 4 |  |
Right-of-use assets net |  | 274 | 303 |  | $ 490
Undiscounted rent payable amount |  | 3,442 | 3,505 |  |
Remaining undiscounted cash flows |  | $ 3,252 | 3,268 |  |
Percentage of undiscounted cash flows relating to lease liabilities |  | 94.00% |  |  |
System Fund impairment charge |  |  | (32) |  |
Impairment charges right of use assets |  |  | 50 |  |
Percentage Of Lease Liabilities Implicit Rate |  | 9.70% |  |  |
Income from subleasing of right of use assets |  | $ 1 | 1 | 2 |
Lease system fund impairment charge reversal |  | 3 |  |  |
Future minimum operating sublease payment receivables |  | 9 | 2 | 3 |
Global Head Office [Member] | UNITED KINGDOM | Lease Agreement [Member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Term of lease | 15 years |  |  |  |
Annual lease rent | $ 3 |  |  |  |
Month of commencement of lease | 2022-01 |  |  |  |
US corporate headquarters [Member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Impairment charges right of use assets |  |  | 2 |  |
Lease system fund impairment charge reversal |  | $ 3 |  |  |
US corporate headquarters [Member] | System Fund [member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Pre tax discount rate |  | 9.50% |  |  |
Americas [member] | Reportable segments [member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Impairment charges right of use assets |  |  | 43 |  |
Americas [member] | Reportable segments [member] | Sublease [Member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Right-of-use assets net |  | $ 1 |  |  |
Income from subleasing of right of use assets |  | $ 1 | 1 | $ 2 |
Americas Region [Member] | US corporate headquarters [Member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Impairment charges right of use assets |  |  | 1 |  |
Central [member] | US corporate headquarters [Member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Impairment charges right of use assets |  |  | $ 1 |  |
Right-of-use assets [member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Description of extended lease term |  | 20 |  |  |
Impairment loss |  | $ 0 |  |  |
Period over which management has projected cash flows |  | five-year |  |  |
Pre tax discount rate used to assess impairment for EMEAA property |  |  | 8.80% |  |
Percentage of pre tax discount rate |  |  | 8.50% |  |
System Fund impairment charge |  |  | $ 32 |  |
Impairment charges right of use assets |  |  | 11 |  |
Right-of-use assets [member] | EMEAA [Member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Impairment loss |  |  | 5 |  |
Right-of-use assets [member] | Americas [member] | Reportable segments [member] | Sublease [Member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Right-of-use assets net |  | $ 0 |  |  |
Right-of-use assets [member] | Americas Region [Member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Impairment charges right of use assets |  |  | 5 |  |
Right-of-use assets [member] | Central [member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Impairment charges right of use assets |  |  | 6 |  |
Property, plant and equipment [member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Impairment charges right of use assets |  |  | $ 7 |  |
Eight Priority Leases [member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Number of top leases | Leases |  | 8 |  |  |
Undiscounted rent payable amount |  | $ 283 |  |  |
Bottom of range [member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Lease Term |  | 1 year |  |  |
Top of range [member] |  |  |  |  |
Disclosure Of Information Leases [Line Items] |  |  |  |  |
Lease Term |  | 99 years |  |  |
Lease Incremental borrowing rates |  | 11.00% |  |  |

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- Definition The amount of income from subleasing right-of-use assets. Sublease is a transaction for which an underlying asset is re-leased by a lessee (‘intermediate lessor’) to a third party, and the lease (‘head lease’) between the head lessor and lessee remains in effect. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 53 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_f&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_j&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of undiscounted operating lease payments to be received. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 97 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_97&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph C12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C -URIDate 2021-03-24 + Details
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- Definition Annual lease rent. + References No definition available. + Details
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- Definition Description of extended lease term + References No definition available. + Details
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- Definition Disclosure Of Information Leases + References No definition available. + Details
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- Definition Lease Right Of Use Assets System Fund Impairment Charge + References No definition available. + Details
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