Nature Of Operations And Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Oct. 02, 2011

Nature Of Operations And Summary Of Significant Accounting Policies [Abstract]

Summary Of Number Of Restaurants

	2011		2010		2009
Jack in the Box:
Company-operated		629		956		1,190
Franchise		1,592		1,250		1,022
Total system		2,221		2,206		2,212
Qdoba:
Company-operated		245		188		157
Franchise		338		337		353
Total system		583		525		510

Schedule Of Sale Leaseback Transactions

	2011			2010			2009
Proceeds from sale of assets	$	28,536		$	85,591		$	13,772
Spending to acquire/purchase assets		(31,798	)		(40,243	)		(50,596	)
Net cash flows related to assets held for sale and leaseback	$	(3,262	)	$	45,348		$	(36,824	)

Summary Of Advertising Costs

	2011		2010		2009
Jack in the Box	$	63,094	$	83,971	$	95,155
Qdoba		7,433		5,860		4,929
Total	$	70,527	$	89,831	$	100,084