Basis Of Presentation (Details)	Jul. 10, 2011	Jul. 04, 2010
Company-Operated [Member] | Jack In The Box [Member]
Number of Restuarants	735	1,094
Company-Operated [Member] | Qdoba [Member]
Number of Restuarants	229	181
Franchised [Member] | Jack In The Box [Member]
Number of Restuarants	1,485	1,140
Franchised [Member] | Qdoba [Member]
Number of Restuarants	335	334
Jack In The Box [Member]
Number of Restuarants	2,220	2,234
Qdoba [Member]
Number of Restuarants	564	515