Summary Of Refranchisings, Franchisee Development And Acquisitions (Number Of Restaurants Sold And Developed By Franchisees And Related Gains And Fees Recognized) (Details) (USD $) In Thousands, unless otherwise specified	4 Months Ended
	Jan. 22, 2012		Jan. 23, 2011
Summary Of Refranchisings, Franchisee Development And Acquisitions [Abstract]
Restaurants sold to franchisees			88
New restaurants opened by franchisees	20		17
Initial franchise fees	$ 720	[1]	$ 4,239	[1]
Proceeds from the sale of company-operated restaurants	1,249		44,083
Net assets sold (primarily property and equipment)			(15,352)
Goodwill related to the sale of company-operated restaurants	(48)		(859)
Other	(79)
Gains on the sale of company-operated restaurants	$ 1,122		$ 27,872

[1] The amount in 2012 primarily represents additional proceeds recognized upon the extension of the underlying franchise and lease agreements related to a restaurant sold in a prior year.