Derivative Gains And Losses That Have Been Recognized In Condensed Consolidated Statements Of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	$ 550		$ 1,716		$ 1,151		$ 5,848
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	903	[1]	1,040	[1]	1,750	[1]	2,078	[1]
Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	$ (353)	[2]	$ 676	[2]	$ (599)	[2]	$ 3,770	[2]

[1] Consists of interest expense from interest rate swap contracts.

[2] Consists of realized and unrealized gains and losses on foreign currency forward contracts.