Income Taxes - Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal, Current	$ 166,024	$ 275,475	$ 172,380
Federal, Deferred	(7,667)	39,045	27,428
Federal, Total	158,357	314,520	199,808
State, Current	43,320	21,212	20,946
State, Deferred	(3,692)	5,573	375
State, Total	39,628	26,785	21,321
Foreign, Current	149,194	123,840	94,910
Foreign, Deferred	(34,121)	2,612	(19,139)
Foreign, Total	115,073	126,452	75,771
Tax Provision (Benefit), Total	$ 313,058	$ 467,757	$ 296,900

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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