XML 361 R119.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Tax - Deferred Tax - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of income tax reconciliation [line items] |  |
Deferred tax assets recognized related to legal entities which suffered tax loss | $ 0 | $ 2
Uncertain tax positions included within deferred tax liability | 0 | 0
Uncertain tax positions offset from deferred tax asset | 0 | 5
Losses [member] |  |
Disclosure of income tax reconciliation [line items] |  |
Deferred tax asset recognised in respect of revenue losses | 35 | 40
Loans Notes [member] | 2025 [member] |  |
Disclosure of income tax reconciliation [line items] |  |
Deferred gains on loan notes |  | 0
Unprovided deferred tax on unremitted earnings [member] |  |
Disclosure of income tax reconciliation [line items] |  |
Unremitted earnings on which no deferred tax provided | $ 800 | $ 500

X
- Definition The aggregate amount of temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements, for which deferred tax liabilities have not been recognised as a result of satisfying both of the following conditions: (a) the parent, investor, joint venturer or joint operator is able to control the timing of the reversal of the temporary difference; and (b) it is probable that the temporary difference will not reverse in the foreseeable future. [Refer: Associates [member]; Subsidiaries [member]; Temporary differences [member]; Investments in subsidiaries] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_f&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Deferred Tax Assets Gains on loan notes. + References No definition available. + Details
Name: | ihg_DeferredTaxAssetsGainsOnLoanNotes
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Deferred tax assets losses recognised in profit loss. + References No definition available. + Details
Name: | ihg_DeferredTaxAssetsLossesRecognisedInProfitLoss
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Deferred tax assets recognized related to legal entities which suffered tax loss. + References No definition available. + Details
Name: | ihg_DeferredTaxAssetsRecognizedRelatedToLegalEntitiesWhichSufferedTaxLoss
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disclosure of income tax reconciliation. + References No definition available. + Details
Name: | ihg_DisclosureOfIncomeTaxReconciliationLineItems
Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Uncertain tax positions deferred liability. + References No definition available. + Details
Name: | ihg_UncertainTaxPositionsDeferredLiability
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Uncertain tax positions offset against deferred asset. + References No definition available. + Details
Name: | ihg_UncertainTaxPositionsOffsetAgainstDeferredAsset
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_MeasurementAxis=ihg_LossesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=ihg_LoansNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=ifrs-full_TemporaryDifferenceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |