Description of Business and Summary of Significant Accounting Policies (Property and Equipment Net) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Carrying Value [Member] | Continuing Operations [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets held for sale measured at fair value	$ 70.4	$ 70.1
Carrying Value [Member] | Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets held for sale measured at fair value	43.2	49.5
Long Lived Assets, Fair Value Disclosure, Adjustments [Member] | Nonrecurring [Member] | Continuing Operations [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets held for sale	0	1.1
Long Lived Assets, Fair Value Disclosure, Impairment Loss [Member] | Nonrecurring [Member] | Continuing Operations [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets held and used	0.8	1.1
Impairment of long-lived assets held for sale		1.5
Long Lived Assets, Fair Value Disclosure, Impairment Loss [Member] | Nonrecurring [Member] | Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets held for sale	0.1	0.5
Long Lived Assets, Fair Value Disclosure, Impairment Loss [Member] | Carrying Value [Member] | Nonrecurring [Member] | Continuing Operations [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets held for sale measured at fair value		14.4
Long Lived Assets, Fair Value Disclosure, Impairment Loss [Member] | Carrying Value [Member] | Nonrecurring [Member] | Discontinued Operations [Member]
Property, Plant and Equipment [Line Items]
Long-lived assets held for sale measured at fair value	$ 3.8	$ 11.4
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	12 years