Summary Of Refranchisings, Franchisee Development And Acquisitions (Purchase Price Allocations On Franchise Acquisitions) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014 restaurant	Sep. 29, 2013 restaurant	Sep. 30, 2012 restaurant
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ (3,548)	$ 4,640	$ 29,145
Restaurants acquired from franchisees (restaurants)	4	14	46
Property and equipment	1,398	3,030	12,379
Reacquired franchise rights	96	148	604
Goodwill, Acquired During Period	256	9,169	36,084
Liabilities assumed	0	(283)	(122)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	1,750	12,064	48,945
Total gain (loss) on the sale of company-operated restaurants [Member]
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	(3,548)	4,640	29,145
Subtotal of gains (losses) on sale of company-operated restaurants [Member]
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ (1,692)	$ 4,640	$ 29,145