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Description of Business and Summary of Significant Accounting Policies (Property and Equipment Net) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Nonrecurring [Member]    
Property, Plant and Equipment [Line Items]    
Impairment of long-lived assets for sale $ 12.8 $ 3.8
Nonrecurring [Member] | Continuing Operations [Member]    
Property, Plant and Equipment [Line Items]    
Impairment of long-lived assets held and used 1.9 3.1
Impairment of long-lived assets for sale 12.1 3.0
Nonrecurring [Member] | Discontinued Operations, Held-for-sale [Member]    
Property, Plant and Equipment [Line Items]    
Impairment of long-lived assets for sale 0.7 0.8
Reported Value Measurement [Member] | Continuing Operations [Member]    
Property, Plant and Equipment [Line Items]    
Long-lived assets held for sale 41.4 47.1
Reported Value Measurement [Member] | Discontinued Operations, Held-for-sale [Member]    
Property, Plant and Equipment [Line Items]    
Long-lived assets held for sale $ 15.7 $ 22.3
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