Leases (Schedule Of Supplemental Cash Flow And Other Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating cash flows from operating leases	$ 57.9	$ 42.6	$ 39.0
Operating cash flows from finance leases	0.3	0.4	0.5
Financing cash flows from finance leases	1.8	2.1	2.3
Right-of-use assets obtained in exchange for lease liabilities, Operating leases	92.5	82.1	54.7
Right-of-use assets obtained in exchange for lease liabilities, Finance leases	1.0	1.5	0.4
Operating leases acquired	$ 20.5	$ 2.9	$ 15.8