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v3.19.3.a.u2

Trade and other receivables (Tables) | 12 Months Ended
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Dec. 31, 2019
Trade and other receivables [abstract] |
Disclosure Of Detailed Information About Trade And Other Receivables Explanatory |
| Non-current 2019 US$m |  | Current 2019 US$m |  | Total 2019 US$m |  | Non-current 2018 US$m |  | Current 2018 US$m |  | Total 2018 US$m |
Trade receivables(a) | 1 |  | 2,097 |  | 2,098 |  | — |  | 2,167 |  | 2,167 |
Other financial receivables(a) | 286 |  | 453 |  | 739 |  | 240 |  | 550 |  | 790 |
Receivables relating to net investment in finance leases(a) | 52 |  | 11 |  | 63 |  | — |  | — |  | — |
Amounts due from equity accounted units(a) | — |  | 38 |  | 38 |  | — |  | 50 |  | 50 |
Other receivables | 123 |  | 209 |  | 332 |  | 129 |  | 226 |  | 355 |
Prepayment of tolling charges to jointly controlled entities(b) | 221 |  | — |  | 221 |  | 228 |  | — |  | 228 |
Pension surpluses (note 44) | 984 |  | — |  | 984 |  | 935 |  | — |  | 935 |
Other prepayments | 49 |  | 219 |  | 268 |  | 53 |  | 186 |  | 239 |
Total | 1,716 |  | 3,027 |  | 4,743 |  | 1,585 |  | 3,179 |  | 4,764 |
(a) | At 31 December 2019, trade and other financial receivables, receivables relating to net investment in finance leases and amounts due from equity accounted units are stated net of allowances for expected credit losses of US$54 million (2018: US$15 million).
(b) | These prepayments will be charged to Group operating costs as processing takes place.

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