XML 48 R36.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Basis Of Presentation (Details) $ in Millions | Jul. 03, 2016 restaurant | Sep. 27, 2015 USD ($) | Jul. 05, 2015 restaurant
--- | --- | --- | ---
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Current Deferred Tax Assets Reclassified to Noncurrent | $ |  | $ 40.0 |
Jack in the box brand restaurant operations [Member] |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of restaurants | 2,254 |  | 2,248
Jack in the box brand restaurant operations [Member] | Entity Operated Units [Member] |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of restaurants | 415 |  | 413
Jack in the box brand restaurant operations [Member] | Franchised Units [Member] |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of restaurants | 1,839 |  | 1,835
Qdoba brand restaurant operations [Member] |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of restaurants | 688 |  | 648
Qdoba brand restaurant operations [Member] | Entity Operated Units [Member] |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of restaurants | 344 |  | 314
Qdoba brand restaurant operations [Member] | Franchised Units [Member] |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Number of restaurants | 344 |  | 334

X
- Definition Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | jack_NatureOfOperationsAndSummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | jack_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, netted by jurisdiction and classified as current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=75116654&loc=d3e31917-109318 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=75116654&loc=d3e31931-109318 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the number of restaurants. + References No definition available. + Details
Name: | us-gaap_NumberOfRestaurants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=jack_JackintheboxbrandrestaurantoperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementOperatingActivitiesSegmentAxis=us-gaap_EntityOperatedUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementOperatingActivitiesSegmentAxis=us-gaap_FranchisedUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=jack_QdobabrandrestaurantoperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |