Leases (Schedule Of Supplemental Balance Sheet Information) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 216.8	$ 175.3
Favorable lease interests, net	2.4	0.7
Total operating lease right-of-use assets	219.2	176.0
Current operating lease liabilities	51.9	43.9
Non-current operating lease liabilities	183.4	147.1
Total operating lease liabilities	235.3	191.0
Property, at cost	13.4	12.8
Accumulated depreciation and amortization	(9.8)	(8.6)
Net property	3.6	4.2
Current obligations of finance leases	1.9	1.6
Finance leases, net of current obligations	2.8	3.9
Total finance lease liabilities	$ 4.7	$ 5.5
Weighted average remaining lease term, Operating leases	5 years	5 years 6 months
Weighted average remaining lease term, Finance leases	2 years 10 months 24 days	3 years 7 months 6 days
Weighted average discount rate, Operating leases	4.20%	3.20%
Weighted average discount rate, Finance leases	7.40%	7.30%