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Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Inventories [Abstract]    
Raw materials $ 70.6 $ 73.4
Work-in-process 5.4 5.4
Finished goods 80.5 86.1
Packaging and supplies 30.4 30.0
Total inventories $ 186.9 $ 194.9