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Lines of Credit and Financing Arrangements (Details) - USD ($)
$ in Millions
Sep. 30, 2015
Dec. 31, 2014
Short-Term Debt:    
Short-term Debt $ 226.3 $ 226.6
Current maturities of long-term debt:    
Capital lease obligations 1.2 1.5
Total current maturities of long-term debt 23.7 24.0
Long-Term Debt:    
Capital lease obligations 15.0 15.5
Total long-term debt 668.0 675.0
Total debt 918.0 925.6
Domestic revolving credit facility [Member]    
Current maturities of long-term debt:    
Domestic credit facility 22.5 22.5
Long-Term Debt:    
Long-term debt 453.0 459.5
Senior unsecured notes [Member]    
Long-Term Debt:    
Long-term debt 200.0 200.0
Asset Securitization [Member]    
Short-Term Debt:    
Short-term Debt 220.0 220.0
Foreign obligations [Member]    
Short-Term Debt:    
Short-term Debt $ 6.3 $ 6.6