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Property, plant and equipment - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) Hotel | Dec. 31, 2023 USD ($) Hotel | Dec. 31, 2022 USD ($)
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Number of open hotels | Hotel | 17 | 17 |
Property, plant and equipment | $ 146 | $ 153 | $ 157
US |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment | 99 | 107 |
EMEAA [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment loss recognised in profit or loss, property, plant and equipment |  | 10 |
Right-of-use assets [member] | EMEAA [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Impairment Charge |  | $ 2 |
UK Portfolio [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Reversal of impairment loss recognised in profit or loss, property, plant and equipment | $ 3 |  | $ 3

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