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Goodwill And Other Intangible Assets (Schedule Of Changes In The Carrying Value Of Goodwill) (Details) (USD $)
In Thousands
9 Months Ended
Sep. 30, 2011
Goodwill And Other Intangible Assets [Abstract] 
Balance as of December 31, 2010$ 499,238
Currency translation effect(1,701)
Business acquisition1,119[1]
Balance as of September 30, 2011$ 498,656
[1]Includes adjustment to preliminary assignment of fair value to net assets acquired.