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Income Taxes - Schedule of Income Before Income Taxes (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract]                      
Domestic                 $ 57,822 $ 55,751 $ 35,154
Foreign                 624,324 585,346 564,960
Income before income taxes $ 197,806 $ 169,230 $ 174,561 $ 140,549 $ 225,738 $ 153,800 $ 148,072 $ 113,487 $ 682,146 $ 641,097 $ 600,114