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Leases - Disclosure of quantitative information about right-of-use assets (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cost |  |  |  |
Beginning balance | $ 623 | $ 610 |  |
Additions and other re-measurements | 17 | 40 |  |
Transfers to finance lease receivable |  | (5) |  |
Terminations | (52) | (10) |  |
Exchange and other adjustments | 1 | (12) |  |
Ending balance | 589 | 623 |  | $ 610
Depreciation and impairment |  |  |  |
Beginning balance | (343) | (336) |  |
Provided | (22) | (25) |  | (27)
System Fund expense | (2) | (3) |  | (3)
Impairment reversal |  | 2 |  |
Impairment Charge |  | (2) |  |
Transfers to finance lease receivable |  | 3 |  |
Terminations | 52 | 10 |  |
Exchange and other adjustments | (1) | 8 |  |
Ending balance | (316) | (343) |  | (336)
Net book value |  |  |  |
Right-of-use assets net | 273 | 280 | [1] | 274
Land and buildings [member] |  |  |  |
Cost |  |  |  |
Beginning balance | 571 | 607 |  |
Additions and other re-measurements | 15 | 40 |  |
Transfers to investment property | (2) | (50) |  |
Transfers to finance lease receivable |  | (5) |  |
Terminations | (51) | (9) |  |
Exchange and other adjustments | 1 | (12) |  |
Ending balance | 534 | 571 |  | 607
Depreciation and impairment |  |  |  |
Beginning balance | (294) | (334) |  |
Provided | (22) | (24) |  |
System Fund expense | (2) | (3) |  |
Impairment reversal |  | 2 |  |
Impairment Charge |  | (2) |  |
Transfers to investment property | 2 | 47 |  |
Terminations | 51 | 9 |  |
Exchange and other adjustments | (1) | 8 |  |
Ending balance | (266) | (294) |  | (334)
Net book value |  |  |  |
Right-of-use assets net | 268 | 277 |  | 273
Investment property [member] |  |  |  |
Cost |  |  |  |
Beginning balance | 50 |  |  |
Transfers to investment property | 2 | 50 |  |
Ending balance | 52 | 50 |  |
Depreciation and impairment |  |  |  |
Beginning balance | (47) |  |  |
Transfers to investment property | (2) | (47) |  |
Ending balance | (49) | (47) |  |
Net book value |  |  |  |
Right-of-use assets net | 3 | 3 |  |
Other [member] |  |  |  |
Cost |  |  |  |
Beginning balance | 2 | 3 |  |
Additions and other re-measurements | 2 |  |  |
Terminations | (1) | (1) |  |
Ending balance | 3 | 2 |  | 3
Depreciation and impairment |  |  |  |
Beginning balance | (2) | (2) |  |
Provided |  | (1) |  |
Terminations | 1 | 1 |  |
Ending balance | (1) | $ (2) |  | (2)
Net book value |  |  |  |
Right-of-use assets net | $ 2 |  |  | $ 1
[1] | Re-presented for the adoption of IFRS 17 ‘Insurance Contracts’ (see New accounting standards and other presentational changes).

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- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 53 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_h&doctype=Standard -URIDate 2023-03-23 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 53 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_a&doctype=Standard -URIDate 2023-03-23 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term that do not meet the definition of investment property. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 53 -Subparagraph j -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_j&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2023-01-01 -Paragraph 47 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_47_a&doctype=Standard -URIDate 2023-03-23 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Depreciation right of use assets charged to the system fund. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Exchange and other adjustments right of use assets at cost operating leases. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Exchange and other adjustments right of use assets operating leases accumulated depreciation and impairment. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Impairment charge reversal right of use assets explanatory. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Impairment charges. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Lease assets cost. + References No definition available. + Details
Name: | ihg_LeaseAssetsCostAbstract
Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Lease right of use assets accumulated depreciation and impairment. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Lease right of use assets accumulated depreciation and impairment terminations. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Lease Right Of Use Assets Depreciation And Impairment + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Lease of right of use assets cost. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Right Of Use AssetsBok Value + References No definition available. + Details
Name: | ihg_RightOfUseAssetsbokValueAbstract
Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Termination of right of use assets,leases. + References No definition available. + Details
Name: | ihg_TerminationOfRightOfUseAssetsleasescost
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Transfers to finance lease receivable. + References No definition available. + Details
Name: | ihg_TransfersToFinanceLeaseReceivable
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Transfers to finance lease receivable depreciation and impairment. + References No definition available. + Details
Name: | ihg_TransfersToFinanceLeaseReceivableDepreciationAndImpairment
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Transfers to investment property. + References No definition available. + Details
Name: | ihg_TransfersToInvestmentProperty
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Transfers to investment property right of use asset. + References No definition available. + Details
Name: | ihg_TransfersToInvestmentPropertyRightOfUseAsset
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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