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Retirement Benefits (Pretax Amounts Recognized in Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
U.S. Plans [Member]
   
Prior service cost $ 419 $ 597
Net loss in current year 49,509 38,813
Total 49,928 39,410
Non-U.S. Plans [Member]
   
Prior service cost 127 131
Net loss in current year 8,781 7,629
Total 8,908 7,760
Other Postretirement Benefit Plans [Member]
   
Prior service cost (2,697) (3,044)
Net loss in current year 2,198 2,313
Total $ (499) $ (731)