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Other Current Assets - Other Current Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Receivables from government agencies	$ 244	$ 216
Taxes and other government receivables	114	71
Advances	39	47
Prepayments	70	56
Loans and deposits	8	8
Interest receivable	3	9
Derivative instruments	65	8
Other current assets	41	27
Total	$ 584	$ 442

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Carrying amount as of the balance sheet date of the asset arising from derivative instruments and hedging activities, which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer.

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