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Contingencies (Summary Of Cumulative Trauma Product Liability Claims Activity) (Details)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Contingencies [Abstract]      
Open claims, January 1 1,900 2,480 2,550
New claims 479 260 220
Settled and dismissed claims (58) (840) (290)
Open claims, December 31 2,321 1,900 2,480