Segments (Schedule of Segment Reporting Information by Segment) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Rental revenues	$ 30,990,000	$ 30,920,000	$ 92,724,000	$ 92,096,000
Financing revenues	3,156,000	3,152,000	10,223,000	11,394,000
Total segment revenues	161,283,000	216,318,000	482,566,000	691,291,000
Interest expense	24,979,000	28,896,000	75,230,000	88,767,000
Depreciation and amortization	8,900,000	9,800,000	26,516,000	30,756,000
Income before income taxes	30,125,000	86,596,000	87,271,000	163,070,000
Corporate and Other
Segment Reporting Information [Line Items]
Interest expense	28,900,000	33,200,000	87,500,000	101,900,000
Franchise Operations
Segment Reporting Information [Line Items]
Franchise revenues	111,700,000	102,600,000	331,600,000	313,500,000
Depreciation and amortization	2,700,000	2,500,000	8,100,000	7,400,000
Income before income taxes	83,300,000	75,500,000	248,800,000	232,400,000
Company Restaurants
Segment Reporting Information [Line Items]
Company restaurant sale revenue	15,400,000	79,600,000	48,100,000	274,300,000
Interest expense	100,000	100,000	300,000	300,000
Depreciation and amortization	500,000	1,600,000	1,600,000	6,400,000
Income before income taxes	(300,000)	11,000,000	(100,000)	42,000,000
Rental Operations
Segment Reporting Information [Line Items]
Rental revenues	31,000,000	30,900,000	92,700,000	92,100,000
Interest expense	3,800,000	4,200,000	12,000,000	12,800,000
Depreciation and amortization	3,300,000	3,400,000	10,100,000	10,300,000
Income before income taxes	6,800,000	6,700,000	19,800,000	19,000,000
Financing Operations
Segment Reporting Information [Line Items]
Financing revenues	3,200,000	3,200,000	10,200,000	11,400,000
Income before income taxes	3,200,000	3,200,000	10,000,000	9,800,000
Corporate
Segment Reporting Information [Line Items]
Interest expense	25,000,000	28,900,000	75,200,000	88,800,000
Depreciation and amortization	2,400,000	2,300,000	6,700,000	6,700,000
Income before income taxes	$ (62,900,000)	$ (9,800,000)	$ (191,200,000)	$ (140,100,000)