- Components of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 103,717	$ 211,017	$ 255,299
State	4,780	16,609	20,438
Foreign	17,367	20,733	21,584
Deferred	(25,561)	(17,983)	(52,033)
Total provision for income taxes for continuing operations	$ 100,303	$ 230,376	$ 245,288