Derivative Gains And Losses That Have Been Recognized In Condensed Consolidated Statements Of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	$ 601		$ 4,132
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	847	[1]	1,038	[1]
Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	$ (246)	[2]	$ 3,094	[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.