Financial Instruments and Risk Management (Effect of Derivative Instruments on the Condensed Consolidated Statement of Operations Derivatives in Net Investment Hedging Relationships) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Amount of Gain or (Loss) Recognized in AOCE (Net of Tax) on Derivative (Effective Portion)	$ 869	$ (8,719)	$ 4,578	$ 178
Foreign Currency Borrowings [Member] | Net Investment Hedging [Member]
Amount of Gain or (Loss) Recognized in AOCE (Net of Tax) on Derivative (Effective Portion)	(13,577)	53,394	(47,296)	89,058
Net Investment Hedging [Member]
Amount of Gain or (Loss) Recognized in AOCE (Net of Tax) on Derivative (Effective Portion)	$ (13,577)	$ 53,394	$ (47,296)	$ 89,058