Property and Equipment Property And Equipment (Schedule Of Property And Equipment) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Land and land improvements	$ 2.6	$ 2.5
Building and improvements	31.8	15.6
Data Processing Equipment And Software	36.5	31.3
Office furniture and equipment	3.8	3.8
Leasehold improvements	2.2	2.2
Total property and equipment	76.9	55.4
Less: Accumulated depreciation on property and equipment	(38.2)	(34.9)
Property and equipment, net	$ 38.7	$ 20.5