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Net Debt - Summary of Movement in Net Debt (Parenthetical) (Detail) £ in Millions | 12 Months Ended
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Dec. 31, 2022 GBP (£)
Disclosure of net debt [abstract] |
Repayments of commercial paper | £ 600

X
- Definition Disclosure of net debt abstract. + References No definition available. + Details
Name: | ihg_DisclosureOfNetDebtAbstract
Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Repayments of commercial paper. + References No definition available. + Details
Name: | ihg_RepaymentsOfCommercialPaper
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration