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Staff costs and Directors' remuneration - Summary of Average Number of Employees (Detail) - Employee | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of average number of employees [line items] |  |  |
Average number of employees, including part-time employees | 28,139 | 27,598 | 25,880
Costs borne by IHG [member] |  |  |
Disclosure of average number of employees [line items] |  |  |
Average number of employees, including part-time employees | 7,387 | 7,292 | 7,047
Employees whose costs are borne by the System Fund or are reimbursed [member] |  |  |
Disclosure of average number of employees [line items] |  |  |
Average number of employees, including part-time employees | 20,752 | 20,306 | 18,833
Americas [member] | Costs borne by IHG [member] |  |  |
Disclosure of average number of employees [line items] |  |  |
Average number of employees, including part-time employees | 1,612 | 1,578 | 1,548
EMEAA [member] | Costs borne by IHG [member] |  |  |
Disclosure of average number of employees [line items] |  |  |
Average number of employees, including part-time employees | 3,635 | 3,642 | 3,638
Greater China [member] | Costs borne by IHG [member] |  |  |
Disclosure of average number of employees [line items] |  |  |
Average number of employees, including part-time employees | 357 | 352 | 333
Central [member] | Costs borne by IHG [member] |  |  |
Disclosure of average number of employees [line items] |  |  |
Average number of employees, including part-time employees | 1,783 | 1,720 | 1,528

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- Definition The average number of personnel employed by the entity during a period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
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