Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income tax expense at federal statutory rate, rate	35.00%	35.00%	35.00%
Excess tax benefits	$ 12,000	$ 26,400	$ 56,800
Cumulative undistributed earnings of non-U.S. subsidiaries	1,356,600
Valuation allowance for deferred tax assets	76,400	62,600
Net change in the total valuation allowance	13,800	35,500
Net operating loss carryforwards for state income tax purposes	697,000
Federal operating loss carry forwards	43,500
Accrued interest and penalties related to the unrecognized tax benefits	5,900	5,400
Total unrecognized tax benefits	26,155	$ 21,834	$ 18,641	$ 21,601
Unrecognized tax benefits that would affect effective tax rate	$ 20,700