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Exchange rates (Tables) | 12 Months Ended
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Dec. 31, 2022
Text Block [Abstract] |
Schedule of Foreign Exchange Rate |
|  |  |  |  | 2022 |  |  |  |  |  | 2021 |  |  |  |  |  | 2020 |
$1 equivalent |  |  |  |  | Average |  |  | Closing |  |  |  |  |  | Average |  |  | Closing |  |  |  |  |  | Average |  |  | Closing |
Sterling |  |  |  |  |  |  | £0.81 |  |  |  | £0.83 |  |  |  |  |  |  |  | £0.73 |  |  |  | £0.74 |  |  |  |  |  |  |  | £0.78 |  |  |  | £0.73 |
Euro |  |  |  |  |  |  | €0.95 |  |  |  | €0.94 |  |  |  |  |  |  |  | € 0.85 |  |  |  | € 0.88 |  |  |  |  |  |  |  | € 0.88 |  |  |  | € 0.81 |

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- Definition Disclosure in tabular form of foreign exchange rate explanatory. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Definition Text block [abstract] + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration