Trade and other receivables (Tables)

12 Months Ended

Dec. 31, 2018

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Schedule of Non-Current Trade and Other Receivables

NON-CURRENT TRADE AND OTHER RECEIVABLES

Million US dollar	2018		2017
Cash deposits for guarantees		197		209
Loans to customers		45		13
Deferred collection on disposals		53		11
Tax receivable, other than income tax		139		68
Trade and other receivables		335		533
		769		834

Schedule of Current Trade and Other Receivables

CURRENT TRADE AND OTHER RECEIVABLES

Million US dollar	2018		2017
Trade receivables and accrued income		4 412		4 752
Interest receivable		19		6
Tax receivable, other than income tax		378		368
Loans to customers		143		166
Prepaid expenses		329		428
Other receivables		1 094		846
		6 375		6 566

Schedule of Trade Receivables and Other Receivables

The ageing of the current trade receivables and accrued income, interest receivable, other receivables and current and non-current loans to customers can be detailed as follows for 2018 and 2017 respectively:

	Net carrying amount as of 31 December 2018		Of which: neither impaired nor past due on the reporting date		Of which not impaired as of the reporting date and past due
					Less than 30 days		Between 30 and 59 days		Between 60 and 89 days		More than 90 days
Trade receivables and accrued income		4 412		4 092		239		52		20		9
Loans to customers		188		176		4		5		3		—
Interest receivable		19		19		—		—		—		—
Other receivables		1 094		1 051		13		26		4		—
		5 713		5 338		256		83		27		9

	Net carrying amount as of 31 December 2017		Of which: neither impaired nor past due on the reporting date		Of which not impaired as of the reporting date and past due
					Less than 30 days		Between 30 and 59 days		Between 60 and 89 days		More than 90 days
Trade receivables and accrued income		4 752		4 369		265		47		40		31
Loans to customers		179		179		—		—		—		—
Interest receivable		6		6		—		—		—		—
Other receivables		846		803		19		6		14		4
		5 783		5 357		284		53		54		35