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Commitments and Contingencies Settlements and Insurance Proceeds (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]        
Litigation Settlement, Amount   $ 12.7    
Gain on Business Interruption Insurance Recovery $ 2.5   $ 8.8  
Deferred Revenue       $ 3.9