Property and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property and Equipment [Line Items]
Property and equipment, gross	$ 545,700,000	$ 746,200,000
Less accumulated depreciation and amortization	(251,300,000)	(272,000,000)
Property and equipment, net	294,375,000	474,154,000
Depreciation expense on property equipment	27,900,000	37,700,000	48,100,000
Land
Property and Equipment [Line Items]
Property and equipment, gross	65,400,000	111,600,000
Building improvements
Property and Equipment [Line Items]
Property and equipment, gross	60,100,000	58,800,000
Leaseholds and improvements
Property and Equipment [Line Items]
Property and equipment, gross	279,800,000	409,800,000
Equipment and fixtures
Property and Equipment [Line Items]
Property and equipment, gross	74,900,000	100,400,000
Construction in progress
Property and Equipment [Line Items]
Property and equipment, gross	4,700,000	4,200,000
Properties under capital lease obligations
Property and Equipment [Line Items]
Property and equipment, gross	60,800,000	61,400,000
Less accumulated depreciation and amortization	$ 32,500,000	$ 29,700,000