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Derivative Instruments And Hedging Strategies (Recognized Gains (Losses) On Derivative Instruments Designated As Fair Value Hedges) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Forward Currency Exchange Contracts, Gain (Loss) Recognized In Income, Effective And Ineffective Portion	$ 0	$ 4,684
Increase (decrease) in fair value of hedged items included in property and equipment corresponding to effective portion of derivative (gains) losses	0	4,684
Total recognized gains (losses) on derivative instruments designated as fair value hedges	$ 0	$ 0

Amount of gain (loss) from the increase (decrease) in fair value of foreign currency derivatives and nonderivative instruments designated as fair value hedging instruments which were recognized in earnings, net of offsets by the gain (loss) on the hedged item to the extent that the fair value hedge was determined to be effective.

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