Supplemental Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended				12 Months Ended		33 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011		Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012
Component of Operating Other Cost and Expense [Line Items]
Foreign currency losses, net	$ 94		$ 25		$ 1,245		$ 2,614
Restructuring charges, net	1,460	[1]	2,625	[1]	15,805	[1]	6,588	[1]	8,584	2,196	26,585
Other, net	2,023		2,076		4,109		3,223
Total other operating expense, net	3,577		4,726		21,159		12,425
Cash taxes paid					89,495		57,604
Interest paid					$ 9,635		$ 11,454

[1] See Note 3 "Restructuring."