Trade and other receivables - Summary of Trade and Other Receivables (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
Trade receivables	$ 514	$ 474
Other receivables	37	27
Prepayments	114	108
Receivables from associates	1	1
Trade and other current receivables	$ 666	$ 610	$ 549

The amount of current loans and receivables. [Refer: Loans and receivables]

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The amount of current prepayments. [Refer: Prepayments]

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The amount of current trade receivables. [Refer: Trade receivables]

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The amount receivable by the entity that it does not separately disclose in the same statement or note.

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The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

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