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Property, plant and equipment - Summary of Net Book Value of Property, Plant and Equipment by Operating Segment (Detail) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | $ 153 | $ 157 | [1] | $ 137
Land and buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 57 | 61 |  | 52
Fixtures, fittings and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 96 | $ 96 |  | $ 85
Americas [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 82 |  |  |
Americas [member] | Land and buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 51 |  |  |
Americas [member] | Fixtures, fittings and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 31 |  |  |
EMEAA [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 5 |  |  |
EMEAA [member] | Land and buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 1 |  |  |
EMEAA [member] | Fixtures, fittings and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 4 |  |  |
Greater China [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 0 |  |  |
Greater China [member] | Land and buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 0 |  |  |
Greater China [member] | Fixtures, fittings and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 0 |  |  |
Central [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 66 |  |  |
Central [member] | Land and buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | 5 |  |  |
Central [member] | Fixtures, fittings and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property plant and equipment | $ 61 |  |  |
[1] | Re-presented for the adoption of IFRS 17 ‘Insurance Contracts’ (see New accounting standards and other presentational changes).

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_a&doctype=Standard -URIDate 2023-03-23 + Details
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