Leases (Schedule Of Supplemental Cash Flow And Other Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 39.0	$ 37.3	$ 33.5
Operating cash flows from finance leases	0.5	0.6	0.7
Financing cash flows from finance leases	2.3	2.2	2.1
Right-of-use assets obtained in exchange for lease liabilities, Operating leases	54.7	35.3	55.9
Right-of-use assets obtained in exchange for lease liabilities, Finance leases	0.4	0.3	$ 2.0
Operating leases acquired	$ 15.8	$ 1.6