Provision Benefit for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Income Tax [Line Items]
Current, U.S.	$ 59,811	$ 48,823	$ 59,384
Current, State and local	5,764	3,434	4,548
Current, Foreign	20,228	31,343	18,178
Total current	85,803	83,600	82,110
Deferred, U.S.	(31,246)	4,792	(6,550)
Deferred, State and local	(2,377)	(1,103)	(293)
Deferred, Foreign	(3,606)	(7,265)	(493)
Total deferred	(37,229)	(3,576)	(7,336)
Total provision for income taxes	$ 48,574	$ 80,024	$ 74,774