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Staff costs and Directors' remuneration - Summary of Staff Costs (Detail) - Costs by employer [member] - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Costs |  |  |  |
Wages and salaries |  | $ 1,890 | $ 1,752 | $ 1,558
Social security costs |  | 159 | 143 | 117
Share-based payment costs |  | 67 | 56 | 46
Pension and other post-retirement benefits: |  |  |  |
Defined benefit plans (note [26]) |  | 7 | 4 | 2
Defined contribution plans |  | 62 | 58 | 53
Total staff costs |  | 2,185 | 2,013 | 1,776
Expenses borne by IHG [member] |  |  |  |
Pension and other post-retirement benefits: |  |  |  |
Total staff costs | [1] | 800 | 747 | 646
Expenses borne by system fund or reimbursed [member] |  |  |  |
Pension and other post-retirement benefits: |  |  |  |
Total staff costs |  | $ 1,385 | $ 1,266 | $ 1,130
[1] | In 2022, included $1m classified as exceptional relating to the costs of ceasing operations in Russia.

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- Definition The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 102 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 99 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_99&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 104 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_104&doctype=Standard -URIDate 2024-03-27 + Details
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