Trade and other receivables - Summary of Trade and Other Receivables (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current
Trade receivables	$ 452	$ 368
Other receivables	23	25
Prepayments	74	77
Loans to and receivables from associates	2	2
Trade and other current receivables	$ 551	472
Non-current
Loans to associates		$ 8

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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- Definition

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

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