Financing Arrangements (Schedule of Long-term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Apr. 30, 2017
Carrying Value at
Finance leases	$ 18.7	$ 17.2
Other	22.3	23.5
Total debt	534.7	568.5
Less: Current portion of long-term debt and short-term debt	(11.6)	(16.8)
Less: Unamortized debt issuance costs	(5.3)	(6.5)
Total long-term debt, net	$ 517.8	545.2
Revolving credit facility
Debt Instrument [Line Items]
Senior notes, interest rate	1.35%
Carrying Value at
Total debt	$ 143.7	173.2
Foreign Line of Credit
Debt Instrument [Line Items]
Senior notes, interest rate	3.25%
Carrying Value at
Total debt	$ 0.0	4.6
Senior Notes due 2027 | Senior Notes
Debt Instrument [Line Items]
Senior notes, interest rate	6.625%		6.625%
Carrying Value at
Total debt	$ 350.0	$ 350.0