XML 532 R176.htm IDEA: XBRL DOCUMENT
v3.20.4

Financial risk management and derivative financial instruments - Summary of Amended Covenant Test Levels For Syndicated and Bilateral Facilities (Detail) $ in Millions | 1 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2019 | Dec. 31, 2021 USD ($)
Amended Covenant Test Levels For Syndicated And Bilateral Facilities [Line Items] |  |  |  |  |
Leverage |  |  | 7.5 |  |
Interest cover |  |  | 1.5 |  |
Liquidity |  | $ 400 | $ 400 |  | $ 400
Minimum [Member] |  |  |  |  |
Amended Covenant Test Levels For Syndicated And Bilateral Facilities [Line Items] |  |  |  |  |
Interest cover | 3.5 | 2.0 | 1.5 | 3.5 |
Maximum [Member] |  |  |  |  |
Amended Covenant Test Levels For Syndicated And Bilateral Facilities [Line Items] |  |  |  |  |
Leverage | 3.5 | 6.5 | 7.5 | 3.5 |

X
- References No definition available. + Details
Name: | ihg_AmendedCovenantTestLevelsForSyndicatedAndBilateralFacilitiesLineItems
Namespace Prefix: | ihg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Covenant liquidity. + References No definition available. + Details
Name: | ihg_CovenantLiquidity
Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Interest cover ratio. + References No definition available. + Details
Name: | ihg_InterestCoverRatio
Namespace Prefix: | ihg_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Leverage ratio. + References No definition available. + Details
Name: | ihg_LeverageRatio
Namespace Prefix: | ihg_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |