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Staff costs and Directors' emoluments - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($) Employee | Dec. 31, 2016 USD ($) Employee | Dec. 31, 2015 USD ($) Employee
Disclosure of information about employees and directors [Line Items] |  |  |
Total number of employees | Employee | 6,658 | 6,587 | 7,311
Total cost incurred for employees | $ 645 | $ 594 | $ 628
Managed Hotels [member] |  |  |
Disclosure of information about employees and directors [Line Items] |  |  |
Total number of employees | 22,577 | 22,002 | 20,452
Total cost incurred for employees | $ 1,056 | $ 1,002 | $ 936
Employees whose costs are borne by IHG [member] |  |  |
Disclosure of information about employees and directors [Line Items] |  |  |
Percentage of full time employees | 91.00% |  |
Percentage of part time employees | 9.00% |  |

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- Details
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- Details
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