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Segmental Information - Summary of Geographical Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of geographical areas [line items] |  |  |  |  |
System Fund | $ 1,564 | $ 1,217 |  | $ 928 |
Revenue | 4,624 | 3,892 | [1] | 2,907 | [1]
Non-current assets | 2,092 | 2,031 |  |  |
Before system funds [member] |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |
Revenue | 3,060 | 2,675 |  | 1,979 |
United Kingdom [member] |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |
Revenue | 263 | 243 |  | 142 |
Non-current assets | 100 | 102 |  |  |
United States [member] |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |
Revenue | 1,777 | 1,659 |  | 1,263 |
Non-current assets | 1,332 | 1,308 |  |  |
Rest of world [member] |  |  |  |  |
Disclosure of geographical areas [line items] |  |  |  |  |
Revenue | 1,020 | 773 |  | $ 574 |
Non-current assets | $ 660 | $ 621 |  |  |
[1] | Re-presented for the adoption of IFRS 17 ‘Insurance Contracts’ and to combine System Fund revenues and reimbursables (see New accounting standards and other presentational changes).

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- Definition The amount of non-current assets other than financial instruments, deferred tax assets, post-employment benefit assets and rights arising under insurance contracts. [Refer: Deferred tax assets; Financial instruments, class [member]; Non-current assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2023-01-01 -Paragraph 33 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2023-en-r&anchor=para_33_b&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 114 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_114&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2023-01-01 -Paragraph 113 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_113_a&doctype=Standard -URIDate 2023-03-23 + Details
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