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Operations and Summary of Significant Accounting Policies - Expenses (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Line Items]      
Interest Free Period on Receivables 12 months    
Gain (Loss) on Extinguishment of Debt $ 0.0 $ (24.5) $ 0.0
Amortization of Deferred Hedge Gains   4.7  
Advertising expense 42.3 42.4 42.0
Interest Income (Expense), Net [Abstract]      
Interest expense 28.8 61.9 54.5
Interest income (8.9) (8.1) (9.4)
Interest expense, net 19.9 53.8 45.1
Selling, general and administrative expenses      
Accounting Policies [Line Items]      
Shipping Handling And Transportation Cost $ 38.9 $ 37.9 $ 35.4