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Accumulated Other Comprehensive Income (Loss) - Derivative (Detail) - Derivative Instruments [Member] - Foreign Currency Derivatives [Member] - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Outstanding derivatives |  |  | $ 0
Foreign currency derivatives | $ (11) | $ 50 |
Tax (expense) benefit | 4 | (20) |
Net of tax (provision) benefit | $ (7) | $ 30 |

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