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Receivables and other assets (Tables)
12 Months Ended
Dec. 31, 2020
Trade and other receivables [abstract]  
Disclosure Of Detailed Information About Trade And Other Receivables Explanatory

Non-current
2020
US$m
Current
2020
US$m
Total
2020
US$m
Non-current
2019
US$m
Current
2019
US$m
Total
2019
US$m
Trade receivables(a)
1 2,543 2,544 2,097 2,098 
Other financial receivables(a)
339 332 671 286 453 739 
Receivables relating to net investment in finance leases(a)
29 9 38 52 11 63 
Amounts due from equity accounted units(a)
 33 33 — 38 38 
Other receivables(b)
369 422 791 123 209 332 
Prepayment of tolling charges to jointly controlled entities(c)
218  218 221 — 221 
Pension surpluses (note 42)782  782 984 — 984 
Other prepayments
58 305 363 49 219 268 
Total
1,796 3,644 5,440 1,716 3,027 4,743 
(a)At 31 December 2020, 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$59 million (2019: US$54 million).
(b)At 31 December 2020, other non-current receivables included US$315 million (2019: US$53 million) and other current receivables US$95 million (2019: US$nil) related to Energy Resources of Australia Ltd (ERA's) deposit held in a trust fund which is controlled by the Government of Australia. During 2020, ERA deposited US$299 million into the trust fund which is recorded in "Other investing cash flows" in the Group cash flow statement. ERA are entitled to reimbursement from the fund once specific phases of rehabilitation relating to the Ranger Project are completed. The fund is outside of the scope of IFRS 9 - "Financial Instruments" and therefore classified as an "other receivable" within "Receivables and other assets".
(c)These prepayments will be charged to Group operating costs as tolling services are rendered and product processing occurs.