v3.3.1.900
Foreign Exchange Hedging Facility - Additional Information (Detail) - Foreign Exchange Forward [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 09, 2011
Derivative Instruments, Gain (Loss) [Line Items]    
Obligations under restricted cash   $ 1
Termination date of facility 2013-02