XML 53 R41.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Derivative Instruments (Narrative) (Details) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 03, 2016 USD ($) | Jul. 05, 2015 USD ($) | Jul. 03, 2016 USD ($) | Jul. 05, 2015 USD ($) | Jun. 15, 2015 USD ($) agreements | Apr. 14, 2014 USD ($) agreements
Derivative [Line Items] |  |  |  |  |  |
Interest rate derivatives held | agreements |  |  |  |  | 11 | 9
Interest Rate Swaps [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  | $ 200,000,000 | $ 300,000,000
Interest rate swaps hedge ineffectiveness | $ 0 | $ 0 | $ 0 | $ 0 |  |
Interest Rate Swap 1 [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  | $ 500,000,000 |

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net gain (loss) during the reporting period due to ineffectiveness in interest rate cash flow hedges. Recognized in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
Name: | us-gaap_GainLossOnInterestRateCashFlowHedgeIneffectiveness
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of interest rate derivative instruments held by the entity at the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959 + Details
Name: | us-gaap_NumberOfInterestRateDerivativesHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=jack_InterestRateSwap1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |