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Trade and other receivables - Summary of Ageing of Trade and Other Receivables (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Financial assets at end of period |  |  |
Gross | $ 532 | $ 387 |
Credit loss allowance | (133) | (78) | $ (18)
Net | 399 | 309 |
Not past due [member] |  |  |
Financial assets at end of period |  |  |
Gross | 249 | 153 |
Credit loss allowance | (2) | (1) |
Net | 247 | 152 |
Past due 1 to 30 days [member] |  |  |
Financial assets at end of period |  |  |
Gross | 66 | 59 |
Credit loss allowance | (5) | (2) |
Net | 61 | 57 |
Past due 31 to 90 days [member] |  |  |
Financial assets at end of period |  |  |
Gross | 52 | 61 |
Credit loss allowance | (7) | (6) |
Net | 45 | 55 |
Past due 91 to 180 days [member] |  |  |
Financial assets at end of period |  |  |
Gross | 36 | 40 |
Credit loss allowance | (9) | (7) |
Net | 27 | 33 |
Past due 181 to 360 days [member] |  |  |
Financial assets at end of period |  |  |
Gross | 38 | 74 |
Credit loss allowance | (21) | (62) |
Net | 17 | $ 12 |
Past due more than 361 days |  |  |
Financial assets at end of period |  |  |
Gross | 91 |  |
Credit loss allowance | (89) |  |
Net | $ 2 |  |

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- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition Gross trade and other receivables. + References No definition available. + Details
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Period Type: | instant

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- Definition Trade and other receivables excluding prepayments. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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