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v3.24.0.1

Provisions - Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Liabilities for incurred claims [member] |  |
Statement [Line Items] |  |
Liability for self insurance | $ 12 |
Reported but not settled claims [member] |  |
Statement [Line Items] |  |
Liability for self insurance | 2 |
Employment related obligations [Member] |  |
Statement [Line Items] |  |
Liability for self insurance | 10 |
Owned and leased properties [Member] |  |
Statement [Line Items] |  |
Maximum liabilities last five policy years | $ 49 | $ 42

X
- Definition Liability for self insurance. + References No definition available. + Details
Name: | ihg_LiabilityForSelfInsurance
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum liabilities last five policy years. + References No definition available. + Details
Name: | ihg_MaximumLiabilitiesLastFivePolicyYears
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Statement [Line Items] + References No definition available. + Details
Name: | ihg_StatementLineItems
Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_InsuranceContractsByRemainingCoverageAndIncurredClaimsAxis=ifrs-full_LiabilitiesForIncurredClaimsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_InsuranceContractsByRemainingCoverageAndIncurredClaimsAxis=ihg_ReportedButNotSettledClaimsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ihg_InsuranceReserveAxis=ihg_EmploymentRelatedObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ihg_InsuranceReserveAxis=ihg_OwnedAndLeasedPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |