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Income Taxes - Schedule of Income (Loss) Before Taxes for Domestic and Foreign Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Domestic operations $ 155,296 $ (168,135) $ (444,891)
Foreign operations (1,201,539) 579,021 507,081
Income (loss) before income taxes $ (1,046,243) $ 410,886 $ 62,190