Lines of Credit and Financing Arrangements (Eligible Amounts Available and Beneficial Interest Sold) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Eligible amounts available and beneficial interests sold
Eligible amount available under the ASP on qualified accounts receivable	$ 369.8	$ 279.1
Less: Beneficial interest transferred	(290.0)	0.0
Remaining amount available	$ 79.8	$ 279.1