Property And Equipment (Schedule Of Property And Equipment) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Land and land improvements	$ 2.9	$ 2.9
Building and improvements	58.8	59.1
Data processing equipment and software	47.2	46.5
Office furniture and equipment	3.0	3.4
Leasehold improvements	0.0	0.7
Total property and equipment	111.9	112.6
Less: Accumulated depreciation on property and equipment	(60.5)	(55.3)
Property, Plant and Equipment, Net, Total	$ 51.4	$ 57.3