Lines of Credit and Financing Arrangements (Outstanding Debt Obligations) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Short-Term Debt:
Total short-term debt	$ 204.1	$ 226.6
Current maturities of long-term debt:
Capital lease obligations	1.2	1.5
Long-Term Debt:
Capital lease obligations	15.6	15.5
Total long-term debt	508.6	675.0
Total debt	743.9	925.6
Domestic Credit Facility [Member]
Current maturities of long-term debt:
Domestic credit facility	30.0	22.5
Long-Term Debt:
Total long-term debt	293.0	459.5
Senior Unsecured Notes [Member]
Long-Term Debt:
Total long-term debt	200.0	200.0
Asset Securitization Program [Member]
Short-Term Debt:
Total short-term debt	200.0	220.0
Foreign Obligations [Member]
Short-Term Debt:
Total short-term debt	$ 4.1	$ 6.6