Property And Equipment (Components Of Property And Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Land	$ 13.2	$ 13.7
Buildings and improvements	261.5	248.0
Furniture, fixtures and equipment	491.4	434.5
Total	766.1	696.2
Less accumulated depreciation	(373.6)	(348.6)
Total	392.5	347.6
Gain on sale of building		5.7
Depreciation expenses	$ 39.0	$ 34.2	$ 41.7