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Segmental Information - Summary of Geographical Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of geographical areas [line items] |  |  |
System Fund | $ 1,611 | $ 1,564 | $ 1,217
Revenue | 4,923 | 4,624 | 3,892
Non-current assets | 2,252 | 2,092 |
Before system funds [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 3,312 | 3,060 | 2,675
United Kingdom [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 291 | 263 | 243
Non-current assets | 104 | 100 |
United States [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 1,902 | 1,777 | 1,659
Non-current assets | 1,370 | 1,332 |
Rest of world [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 1,119 | 1,020 | $ 773
Non-current assets | $ 778 | $ 660 |

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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; Classes of financial instruments [domain]; Non-current assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 33 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_33_b&doctype=Standard -URIDate 2024-03-27 + 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 2024-01-01 -Paragraph 114 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_114&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 113 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_113_a&doctype=Standard -URIDate 2024-03-27 + Details
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