Description of Business and Summary of Significant Accounting Policies (Property and Equipment Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reported Value Measurement [Member] | Continuing Operations [Member]
Property, Plant and Equipment [Line Items]
Assets held for sale in continuing operations	$ 40.6	$ 67.8
Reported Value Measurement [Member] | Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Assets held for sale in discontinued operations	$ 8.0	$ 14.1
Buildings and improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	5 years
Buildings and improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	40 years
Furniture, fixtures, and equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	3 years
Furniture, fixtures, and equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful life	10 years