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Operations and Summary of Significant Accounting Policies - Expenses (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Advertising Expense $ 50.9 $ 59.8 $ 60.5
Interest Income (Expense), Net [Abstract]      
Interest expense 64.1 71.9 78.8
Interest Income (18.7) (13.5) (20.8)
Interest Expense, Net 45.4 58.4 58.0
Selling, General and Administrative Expenses      
Shipping and Handling Costs $ 26.6 $ 29.2 $ 29.3