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Other Current Assets - Other Current Assets (Detail) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Receivables [Abstract] |  |
Receivables from government agencies | $ 114 | $ 161
Taxes and other government receivables | 85 | 94
Advances | 126 | 35
Prepayments | 44 | 39
Loans and deposits | 9 | 8
Interest receivable | 7 | 6
Derivative instruments | 5 | 41
Other current assets | 29 | 41
Total | $ 419 | $ 425

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