Derivative Gains and Losses that have been Recognized in the Condensed Consolidated Statements of Operations (Detail) (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	$ 1,716		$ (309)		$ 5,848		$ 1,408
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	1,040	[1]	1,875	[1]	2,078	[1]	4,318	[1]
Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses) recognized in income	$ 676	[2]	$ (2,184)	[2]	$ 3,770	[2]	$ (2,910)	[2]

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

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