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Segmental Information - Summary of Information by Reportable Segment - Result (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of reportable segments [line items] |  |  |  |  |
System Fund and reimbursable revenues | $ 2,460 | $ 2,049 | [1] | $ 1,517 | [1]
Revenue | 4,624 | 3,892 | [1] | 2,907 | [1]
Operating profit | 1,066 | 628 | [1] | 494 | [1]
Net financial expenses | (52) | (96) |  | (139) |
Fair value (losses)/gains on contingent purchase consideration | (4) | 8 | [1] | 6 | [1]
Profit/(loss) before tax | 1,010 | 540 | [1] | 361 | [1]
Tax | (260) | (164) | [1] | (96) | [1]
Profit for the year | 750 | 376 | [1],[2] | 265 | [1]
Exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | 28 | (95) |  | (29) |
Profit/(loss) before tax | 28 | (95) |  | (29) |
Tax | 7 | (26) |  | (29) |
Reportable segments [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Revenue | 2,164 | 1,843 |  | 1,390 |
Reportable segments [member] | Before exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | 1,019 | 828 |  | 534 |
System Fund and Reimbursable Result [member] | Exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | 19 | (105) |  | (11) |
Americas [member] | Exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | 27 | (46) |  | (22) |
Americas [member] | Reportable segments [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Revenue | 1,105 | 1,005 |  | 774 |
Americas [member] | Reportable segments [member] | Before exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | 815 | 761 |  | 559 |
EMEAA [member] | Exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | 1 | (49) |  | (7) |
EMEAA [member] | Reportable segments [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Revenue | 677 | 552 |  | 303 |
EMEAA [member] | Reportable segments [member] | Before exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | 215 | 152 |  | 5 |
Greater China [member] | Reportable segments [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Revenue | 161 | 87 |  | 116 |
Greater China [member] | Reportable segments [member] | Before exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | 96 | 23 |  | 58 |
Central [member] | Reportable segments [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Revenue | 221 | 199 |  | 197 |
Central [member] | Reportable segments [member] | Before exceptional items [member] |  |  |  |  |
Disclosure of reportable segments [line items] |  |  |  |  |
Operating profit | $ (107) | $ (108) |  | $ (88) |
[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).
[2] | In 2023, gains/(losses) on net investment hedges have been presented on a separate line. The 2022 amount was previously presented within ‘Exchange (losses)/gains on retranslation of foreign operations’.

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