XML 447 R175.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Classification and measurement of financial instruments - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2018
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Contingent purchase consideration | $ 69 | $ 65 |
Other current payables | 135 | 173 |
Specifically allocated expenses [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Other current payables | 18 | 18 |
Barclay associate [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Put Option Value Of Investment In Associate | 0 | $ 0 |
Level 3 [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Estimated reduction in the fair value of the hotel | $ 38 |  |
Regent Hospitality Worldwide Inc [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Percentage of voting equity interests acquired |  |  | 51.00%
Ownership Percentage |  |  | 100.00%
Bottom of range [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Non-marketability factor | 20.00% | 20.00% |
Top of range [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Non-marketability factor | 30.00% | 30.00% |
Regent [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Beneficial interest |  |  | 49.00%
Contingent Consideration change description | The significant unobservable inputs used to determine the fair value of the contingent purchase consideration are the projected trailing revenues of RHW and the date of exercising the options. If the annual trailing revenue of RHW were to exceed the floor by 10%, the amount of the contingent purchase consideration recognised in the Group Financial Statements would increase by $7m (2022: $6m). If the date for exercising the options is assumed to be 2033, the amount of the undiscounted contingent purchase consideration would be $86m (2022: $86m). |  |
Contingent purchase consideration | $ 69 | $ 65 |
Regent [member] | Bottom of range [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Disclosure of significant unobservable inputs used in fair value measurement of liabilities | 81 |  |
Regent [member] | Top of range [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Disclosure of significant unobservable inputs used in fair value measurement of liabilities | 261 |  |
Payable 2021 [member] | Regent [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Liabilities incurred | 13 |  |
Payable 2024 [member] | Regent [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Liabilities incurred | 13 |  |
Payment due in 2026 [member] | Regent [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Cash consideration | $ 39 |  |
Payment due in 2026 [member] | Regent [member] | Regent Hospitality Worldwide Inc [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Beneficial interest | 25.00% |  |
Cash consideration years | 2026 |  |
Payment due in 2028 [member] | Regent [member] | Regent Hospitality Worldwide Inc [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Beneficial interest | 24.00% |  |
Cash consideration | $ 42 |  |
Cash consideration years | 2028 |  |
Discount rate, measurement input [member] | Bottom of range [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Percentage of possible increase in unobservable input, liabilities | 6.40% | 6.30% |
Discount rate, measurement input [member] | Top of range [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Percentage of possible increase in unobservable input, liabilities | 10.00% | 10.00% |
Annual trailing revenue exceeding the floor [Member] | Regent [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Sensitivity analysis annual trailing revenue exceeding the floor | 10.00% |  |
Increase (decrease) in contingent consideration | $ 7 | $ 6 |
Exercising the options in 2033 [Member] | Regent [member] |  |  |
Disclosure of fair value measurement of assets and liabilities [line items] |  |  |
Contingent purchase consideration | $ 86 | $ 86 |

X
- Definition The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B64 -Subparagraph f -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_f_i&doctype=Appendix&subtype=B -URIDate 2023-03-23 + Details
Name: | ifrs-full_CashTransferred
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of contingent liabilities recognised as of the acquisition date in a business combination. [Refer: Contingent liabilities [member]; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B64 -Subparagraph i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph IE72 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2023-03-23 + Details
Name: | ifrs-full_ContingentLiabilitiesRecognisedAsOfAcquisitionDate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The description of the contingent consideration arrangements and the arrangements for indemnification assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B64 -Subparagraph g -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_g_ii&doctype=Appendix&subtype=B -URIDate 2023-03-23 + Details
Name: | ifrs-full_DescriptionOfArrangementForContingentConsiderationArrangementsAndIndemnificationAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The explanation of any changes in recognised amounts of contingent consideration assets or liabilities in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B67 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B67_b_i&doctype=Appendix&subtype=B -URIDate 2023-03-23 + Details
Name: | ifrs-full_ExplanationOfAnyChangesInRecognisedAmountsOfContingentConsideration
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of non-current payables for the purchase of non-current assets. [Refer: Payables for purchase of non-current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 78 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_NoncurrentPayablesForPurchaseOfNoncurrentAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current payables that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_OtherCurrentPayables
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The percentage of a reasonably possible increase in an unobservable input used in fair value measurement of liabilities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2023-01-01 -Paragraph 93 -Subparagraph h -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2023-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B64 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B -URIDate 2023-03-23 + Details
Name: | ifrs-full_PercentageOfVotingEquityInterestsAcquired
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2023-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2023-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2023-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2023-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2023-01-01 -Paragraph 19B -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_19B_c&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInSubsidiary
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ihg_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems
Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Estimated reduction in the fair value of the hotel. + References No definition available. + Details
Name: | ihg_EstimatedReductionInTheFairValueOfTheHotel
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Increase (decrease) in contingent consideration. + References No definition available. + Details
Name: | ihg_IncreaseDecreaseInContingentConsideration
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase in percentage of sensitivity of annual trailing revenue. + References No definition available. + Details
Name: | ihg_IncreaseInPercentageOfSensitivityOfAnnualTrailingRevenue
Namespace Prefix: | ihg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of price earnings non-marketability factor. + References No definition available. + Details
Name: | ihg_NonmarketabilityFactor
Namespace Prefix: | ihg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Put option value of investment in associate. + References No definition available. + Details
Name: | ihg_PutOptionValueOfInvestmentInAssociate
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Range of amounts payable on exercise of put and call options. + References No definition available. + Details
Name: | ihg_RangeOfAmountsPayableOnExerciseOfPutAndCallOptions
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Remaining ownership interest acquiring percentage. + References No definition available. + Details
Name: | ihg_RemainingOwnershipInterestAcquiringPercentage
Namespace Prefix: | ihg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis=ihg_SpecificallyAllocatedExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=ihg_BarclayAssociateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ihg_RegentHospitalityWorldwideIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=ihg_RegentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ihg_SettledIn2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ihg_SettledIn2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ihg_PaymentDueIn2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ihg_PaymentDueIn2028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_UnobservableInputsAxis=ifrs-full_DiscountRateMeasurementInputMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_UnobservableInputsAxis=ihg_AnnualTrailingRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_UnobservableInputsAxis=ihg_DateForExercisingTheOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |