Income Taxes - Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 173,930	$ 109,272	$ 42,874
State	23,287	12,397	11,998
Foreign	37,193	14,657	7,668
Total current tax provision	234,410	136,326	62,540
Deferred:
Federal	(15,457)	16,134	4,487
State	(451)	1,627	965
Foreign	(562)	4,772	(4,896)
Total deferred tax provision (benefit)	(16,470)	22,533	556
Total provision for income taxes	$ 217,940	$ 158,859	$ 63,096