XML 103 R96.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Tax - Summary of Reconciliation of Tax Charge (Parenthetical) (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of income tax reconciliation [Line Items] |  |  |
Effect of changes in tax rates and tax laws | 0.30% | 0.40% | (1.50%)
InterContinental New York Barclay [member] |  |  |
Disclosure of income tax reconciliation [Line Items] |  |  |
Effect of changes in tax rates and tax laws |  |  | (1.50%)

X
- Definition The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from a change in tax rate. [Refer: Average effective tax rate; Applicable tax rate] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_c_ii&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_TaxRateEffectFromChangeInTaxRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent reconciliation of changes in deferred tax liability (asset). + References No definition available. + Details
Name: | ihg_DisclosureOfIncomeTaxReconciliationLineItems
Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_CounterpartiesAxis=ihg_IntercontinentalNewYorkBarclayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |