Property and Equipment (Property and Equipment) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 292.3	$ 292.8
Long-term notes receivable	868.4	1,012.8
Other property and equipment
Property, Plant and Equipment [Line Items]
Accumulated depreciation	(312.2)	(207.3)
Long-term notes receivable	286.1	387.7
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	39.1	43.0
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	183.1	206.3
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40.8	36.2
Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4.4	5.0
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 38.6	$ 11.7