Financing Arrangements (Schedule of Long-term Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Finance Leases	$ 15.2	$ 18.7
Other	18.2	22.3
Total debt	605.2	534.7
Less current portion of long-term debt and short-term debt	(8.9)	(11.6)
Less unamortized debt issuance costs	(4.2)	(5.3)
Total long-term debt, net	$ 592.1	517.8
Revolving credit facility
Debt Instrument [Line Items]
Stated interest rate	1.30%
Long-term debt, gross	$ 221.8	143.7
Senior Notes | Senior Notes
Debt Instrument [Line Items]
Stated interest rate	6.625%
Long-term debt, gross	$ 350.0	$ 350.0