Impact of the Company's Hedges of Net Investment (Detail) (Net Investment Hedging, USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain (Loss) in AOCI	$ (70,023)	$ 59,454	$ (112,703)	$ 97,422
Gain (Loss) Recognized in Income	(1,140)	(313)	(1,922)	(980)
Cross Currency Interest Rate Swaps | Group 1
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain (Loss) in AOCI	(58,388)	13,809	(71,336)	23,019
Cross Currency Interest Rate Swaps | Group 1 | Interest income
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain (Loss) Recognized in Income	170	173	369	220
Cross Currency Interest Rate Swaps | Group 1 | Interest Expense
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain (Loss) Recognized in Income	(40)	(22)	(65)
Cross Currency Interest Rate Swaps | Group 2
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain (Loss) in AOCI	(11,635)	45,645	(41,367)	74,403
Cross Currency Interest Rate Swaps | Group 2 | Interest income
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain (Loss) Recognized in Income				(79)
Cross Currency Interest Rate Swaps | Group 2 | Interest Expense
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain (Loss) Recognized in Income	$ (1,270)	$ (464)	$ (2,226)	$ (1,121)