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Commitments and Contingencies (Claims for Asbestos) (Details) - claims
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]    
Claims outstanding at beginning of year 489 440
New claims filed 288 231
Pending claims concluded (172) (182)
Claims outstanding at end of year 605 489