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Trade and other receivables - Summary of Ageing of Trade and Other Receivables (Detail) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Financial assets at end of period |  |  |
Gross | $ 610 | $ 532 |
Credit loss allowance | (117) | (133) | $ (78)
Net | 493 | 399 |
Not past due [member] |  |  |
Financial assets at end of period |  |  |
Gross | 307 | 249 |
Credit loss allowance | (1) | (2) |
Net | 306 | 247 |
Past due 1 to 30 days [member] |  |  |
Financial assets at end of period |  |  |
Gross | 76 | 66 |
Credit loss allowance | (7) | (5) |
Net | 69 | 61 |
Past due 31 to 90 days [member] |  |  |
Financial assets at end of period |  |  |
Gross | 57 | 52 |
Credit loss allowance | (6) | (7) |
Net | 51 | 45 |
Past due 91 to 180 days [member] |  |  |
Financial assets at end of period |  |  |
Gross | 46 | 36 |
Credit loss allowance | (9) | (9) |
Net | 37 | 27 |
Past due 181 to 360 days [member] |  |  |
Financial assets at end of period |  |  |
Gross | 34 | 38 |
Credit loss allowance | (11) | (21) |
Net | 23 | 17 |
Past due more than 361 days |  |  |
Financial assets at end of period |  |  |
Gross | 90 | 91 |
Credit loss allowance | (83) | (89) |
Net | $ 7 | $ 2 |

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