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Debt Debt - Credit Facility (Details) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Line of Credit Facility [Line Items]    
Corporate Credit Agreement, revolving credit facility $ 175.0  
Line of Credit Facility, Amount Outstanding 0.0  
Receivables facility amount outstanding 46.5 $ 17.6
Letters of Credit Outstanding, Amount 6.3  
Receivables Facility Remaining Borrowing Capacity 50.8  
Receivables facility maximum borrowing availability 103.6  
Receivables facility maximum borrowing capacity $ 120.0