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TRADE AND OTHER RECEIVABLES - Aging of trade receivables (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Aging of trade receivables
Trade receivables, current	$ 619	$ 609
Neither past due nor impaired
Aging of trade receivables
Trade receivables, current	427	371
Less than 30 days past due | Past due but not impaired
Aging of trade receivables
Trade receivables, current	101	86
Between 30 and 120 days past due | Past due but not impaired
Aging of trade receivables
Trade receivables, current	53	81
Greater than 120 days past due | Past due but not impaired
Aging of trade receivables
Trade receivables, current	$ 38	$ 71

X

- Definition

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

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