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Leases - Schedule Of Operating Sublease Payments Receivable (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Operating Sublease Payments Receivables [Line Items] |  |  |
Future Minimum Operating Sublease Payments Receivable | $ 9 | $ 2 | $ 3
Not later than one year [member] |  |  |
Operating Sublease Payments Receivables [Line Items] |  |  |
Future Minimum Operating Sublease Payments Receivable | 2 |  |
Later than one year and not later than two years [member] |  |  |
Operating Sublease Payments Receivables [Line Items] |  |  |
Future Minimum Operating Sublease Payments Receivable | 2 |  |
Later than one year and not later than five years [member] |  |  |
Operating Sublease Payments Receivables [Line Items] |  |  |
Future Minimum Operating Sublease Payments Receivable | $ 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 2021-01-01 -Paragraph 97 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_97&doctype=Standard -URIDate 2021-03-24 + 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
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- Details
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Namespace Prefix: |
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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: |