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Exceptional Items - Summary of Exceptional Items relating to UK portfolio (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure Of Exceptional Items [line items] |  |  |
Derecognition of right-of-use assets and lease liabilities | $ 0 | $ 22 |
Provisions charged to the income statement (incl onerous contracts) | (40) |  |
Impairment charges [abstract] |  |  |
Impairment loss |  | (4) |
Property plant and equipment | 0 | (90) |
Other impairment charges | (4) | (226) | $ (131)
Profit (loss) from operating activities | 494 | (153) | 630
Fair value gains on contingent purchase consideration | 6 | 13 | 27
(Loss) profit before tax | 361 | (280) | 542
Cost of Sales [Member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Reorganisation costs |  | (8) |
Right-of-use assets [member] |  |  |
Impairment charges [abstract] |  |  |
Impairment loss | $ 0 |  |
UK Portfolio [member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Derecognition of right-of-use assets and lease liabilities |  | 18 |
Exceptional items [member] | Cost of Sales [Member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Reorganisation costs |  | (4) |
Exceptional items [member] | Onerous Contracts Provisions [Member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Provisions charged to the income statement (incl onerous contracts) |  | (10) |
Exceptional items [member] | UK Portfolio [member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Derecognition of right-of-use assets and lease liabilities |  | 18 |
Impairment charges [abstract] |  |  |
Goodwill |  |  | (49)
Property plant and equipment |  | (50) |
Other impairment charges |  | (50) | (81)
Profit (loss) from operating activities |  | (46) | (81)
Fair value gains on contingent purchase consideration |  | 21 | 38
(Loss) profit before tax |  | (25) | (43)
Exceptional items [member] | UK Portfolio [member] | Cost of Sales [Member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Reorganisation costs |  | (4) |
Impairment charges [abstract] |  |  |
Profit (loss) from operating activities |  | 4 |
Exceptional items [member] | UK Portfolio [member] | Onerous Contracts Provisions [Member] |  |  |
Disclosure Of Exceptional Items [line items] |  |  |
Provisions charged to the income statement (incl onerous contracts) |  | $ (10) |
Exceptional items [member] | UK Portfolio [member] | Right-of-use assets [member] |  |  |
Impairment charges [abstract] |  |  |
Impairment loss |  |  | $ (32)

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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_98_a&doctype=Standard -URIDate 2021-03-24 + Details
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