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Reconciliation of profit/(loss) for the year to cash flow from operations - Summary of Reconciliation of Profit/(Loss) for the Year to Cash Flow From Operations (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of profit (loss) to net cash flows from operating activities [Line Items] |  |  |
Profit/(loss) for the year | $ 376 | $ 265 | $ (260)
Adjustments for: |  |  |
Net financial expenses | 96 | 139 | 140
Fair value gains on contingent purchase consideration | (8) | (6) | (13)
Income tax charge/(credit) | 164 | 96 | (20)
Operating profit adjustments: |  |  |
Impairment loss on financial assets | 5 | 0 | 88
Other net impairment (reversals)/charges | (5) | 4 | 226
Other operating exceptional items | 100 | 25 | (4)
Depreciation and amortisation | 68 | 98 | 110
Operating profit adjustments | 168 | 127 | 420
Contract assets deduction in revenue | 32 | 35 | 25
Share-based payments cost | 30 | 28 | 21
Share of (profits)/losses of associates and joint ventures (before exceptional items) | 59 | 8 | 14
Other adjustments for non-cash items | 61 | 71 | 60
System Fund adjustments: |  |  |
Depreciation and amortisation | 86 | 94 | 62
Impairment loss/(reversal) on financial assets | 7 | (6) | 24
Other impairment (reversals)/charges | 0 | (3) | 41
Other operating exceptional items | 0 |  | 20
Share-based payments cost | 16 | 13 | 11
Share of losses of associates | 1 | 2 | 1
System fund adjustments | 110 | 100 | 159
Working capital and other adjustments: |  |  |
Increase in deferred revenue | 108 | 39 | 1
Decrease in inventories | 0 | 1 | 1
(Increase)/decrease in trade and other receivables | (132) | (75) | 38
Increase/(decrease) in trade and other payables | 121 | 153 | (69)
Other adjustments | 4 | (8) | 2
Working capital and other adjustments | 101 | 110 | (27)
Cash flows relating to exceptional items | (43) | (12) | (87)
Contract acquisition costs, net of repayments | (64) | (42) | (64)
Total adjustments | 585 | 583 | 568
Cash flow from operations | 961 | 848 | 308
Excluding exceptional items [member] |  |  |
Operating profit adjustments: |  |  |
Share of (profits)/losses of associates and joint ventures (before exceptional items) | $ (1) | $ 8 | $ 14

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