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Exceptional Items - Summary of Exceptional Items (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cost of sales: |  |  |
Derecognition of right-of-use assets and lease liabilities | $ 0 |  | $ 22
Gain on lease termination | 0 |  | 30
Provisions charged to income statement (incl onerous contracts) | (54) |  |
Administrative expenses: |  |  |
Administrative expenses | (364) | $ (300) | (267)
Impairment loss on financial assets | (5) | 0 | (88)
Other net impairment reversals/(charges): |  |  |
Impairment (Charge) |  |  | (4)
Contract assets (Charge) | 5 |  |
Contract assets (Reversal) | 3 | 0 |
Other impairment charges | 5 | (4) | (226)
Profit/(loss) before tax | 540 | 361 | (280)
Financial expenses | (118) | (147) | (144)
Fair value gains on contingent purchase consideration | 8 | 6 | 13
Tax on exceptional items | 26 | 29 | 52
Tax | 164 | 96 | (20)
Operating exceptional items | (95) | (29) | (270)
Operating exceptional items analysed as: |  |  |
Operating exceptional profit before tax | 628 | 494 | (153)
Right-of-use assets [member] |  |  |
Other net impairment reversals/(charges): |  |  |
Impairment (Charge) | (5) |  | (16)
Exceptional items [member] |  |  |
Cost of sales: |  |  |
Derecognition of right-of-use assets and lease liabilities | 0 | 0 | 22
Gain on lease termination | 0 | 0 | 30
Total cost of sales | 0 | 0 | 34
Administrative expenses: |  |  |
Commercial litigation and disputes | (28) | (25) | (5)
Administrative expenses | (40) | (25) | (30)
Share of losses of associate | (60) |  |
Impairment loss on financial assets | 0 |  | (48)
Other net impairment reversals/(charges): |  |  |
Management agreements (Charge) |  | 0 |
Property plant and equipment (Charge) | (10) | 0 | (90)
Impairment (Charge) |  |  | (13)
Contract assets (Charge) | (5) | 0 | (53)
Management agreements (Reversal) | 12 | 0 | 0
Property, plant and equipment (Reversal) | 3 | 0 | 0
Contract assets (Reversal) | 3 | 0 | 0
Other impairment charges | 5 | (4) | (226)
Profit/(loss) before tax | (95) | (29) | (263)
Financial expenses | 0 |  | (14)
Fair value gains on contingent purchase consideration | 0 |  | 21
Tax on exceptional items | 26 | 3 | 52
Exceptional tax | 0 | 26 |
Tax | 26 | 29 | 52
Operating exceptional items analysed as: |  |  |
Operating exceptional profit before tax | (95) | (29) | (270)
Exceptional items [member] | Integration costs [member] |  |  |
Administrative expenses: |  |  |
Integration costs | 0 |  | (6)
Exceptional items [member] | Cost of ceasing operations [member] |  |  |
Administrative expenses: |  |  |
Costs of ceasing operations in Russia | (12) | 0 |
Exceptional items [member] | Cost of Sales [Member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Reorganisation costs | 0 | 0 | (8)
Exceptional items [member] | Administrative Expenses [member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Reorganisation costs | 0 |  | (19)
Exceptional items [member] | Right-of-use assets [member] |  |  |
Other net impairment reversals/(charges): |  |  |
Impairment (Charge) | (2) | 0 | (16)
Impairment (Reversal) | 2 | 0 | 0
Exceptional items [member] | Management agreements [member] |  |  |
Other net impairment reversals/(charges): |  |  |
Management agreements (Charge) | 0 |  | (48)
Exceptional items [member] | Onerous Contracts Provisions [Member] |  |  |
Cost of sales: |  |  |
Provisions charged to income statement (incl onerous contracts) | 0 | 0 | (10)
Exceptional items [member] | Associates [member] |  |  |
Other net impairment reversals/(charges): |  |  |
Impairment (Charge) | 0 | (4) | (19)
Impairment (Reversal) | 2 | 0 | 0
Operating exceptional items analysed as: |  |  |
Operating exceptional profit before tax | (42) |  |
Exceptional items [member] | Americas [member] |  |  |
Operating exceptional items analysed as: |  |  |
Operating exceptional profit before tax | (46) | (22) | (118)
Exceptional items [member] | EMEAA [member] |  |  |
Operating exceptional items analysed as: |  |  |
Operating exceptional profit before tax | (49) | $ (7) | (128)
Exceptional items [member] | Greater China [member] |  |  |
Operating exceptional items analysed as: |  |  |
Operating exceptional profit before tax | 0 |  | (5)
Exceptional items [member] | Central [member] |  |  |
Operating exceptional items analysed as: |  |  |
Operating exceptional profit before tax | $ 0 |  | $ (19)

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- Definition The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2022-03-24 -Paragraph 23 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2022-en-r&anchor=para_23_h&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2022-03-24 -Paragraph 35 -Subparagraph b -Clause viii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2022-en-r&anchor=para_35_b_viii&doctype=Standard -URIDate 2022-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2022-03-24 -Paragraph 79 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_79&doctype=Standard -URIDate 2022-03-24 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2022-03-24 -Paragraph 81 -Subparagraph c -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_c_i&doctype=Standard -URIDate 2022-03-24 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2022-03-24 -Paragraph 81 -Subparagraph c -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2022-03-24 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2022-03-24 -Paragraph B13 -Subparagraph g -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2022-en-r&anchor=para_B13_g&doctype=Appendix&subtype=B -URIDate 2022-03-24 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 82 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_82_d&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Increase through impairment contract assets. + References No definition available. + Details
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- Definition Operating exceptional items + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- References No definition available. + Details
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Namespace Prefix: | ihg_
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Balance Type: | na
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- Definition Total cost of sales. + References No definition available. + Details
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Namespace Prefix: | ihg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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