Derivative Gains and Losses that have been Recognized in the Condensed Consolidated Statements of Operations (Detail) (USD $) In Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	$ (954)		$ 3,296		$ 4,894		$ 4,704
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	1,022	[1]	1,799	[1]	3,100	[1]	6,117	[1]
Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	$ (1,976)	[2]	$ 1,497	[2]	$ 1,794	[2]	$ (1,413)	[2]

[1] Includes interest expense (income) recognized on the Company's interest rate swap contracts.

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