XML 473 R139.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Property, plant and equipment - Additional Information (Detail) - Hotel | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [abstract] |  |
Number of open hotels | 26 | 23

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- References No definition available. + Details
Name: | ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of opened hotel. + References No definition available. + Details
Name: | ihg_NumberOfOpenedHotel
Namespace Prefix: | ihg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration