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Derivative Financial Instruments - Additional Information (Detail) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Derivatives, Fair Value [Line Items]    
Derivative Assets $ 26 $ 53
Derivative Liabilities 286 $ 399
Fair value of the Company's foreign currency forward contracts 260  
Fair Value, Inputs, Level 2 [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Assets 26  
Derivative Liabilities $ 286