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Borrowing Arrangements - Schedule of Long-Term Borrowing (Details) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Long-term debt $ 234.3 $ 225.1
Current portion of obligations under Restated Credit Facility and other long-term borrowings 16.5 15.2
Total long-term obligations under credit facility and other borrowings 217.8 209.9
Senior credit facility, net of discount    
Debt Instrument [Line Items]    
Long-term debt 232.4 223.1
Other debt obligations    
Debt Instrument [Line Items]    
Long-term debt $ 1.9 $ 2.0