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Leases - Schedule Of Operating Sublease Payments Receivable (Detail) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Operating Sublease Payments Receivables [Line Items] |  |  |
Operating sublease payments receivable | $ 9 | $ 9 | $ 2
Less than 1 year [member] |  |  |
Operating Sublease Payments Receivables [Line Items] |  |  |
Operating sublease payments receivable | 2 | 2 |
Between 1 and 2 years [member] |  |  |
Operating Sublease Payments Receivables [Line Items] |  |  |
Operating sublease payments receivable | 2 | 2 |
Between 2 and 5 years [member] |  |  |
Operating Sublease Payments Receivables [Line Items] |  |  |
Operating sublease payments receivable | $ 5 | $ 5 |

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- Definition The amount of undiscounted operating lease payments to be received. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2022-03-24 -Paragraph 97 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2022-en-r&anchor=para_97&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Operating sublease payments receivables. + 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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- 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
Name: | ihg_OperatingSubleasePaymentsReceivableAxis=ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |