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Impairment, Disposition Of Property And Equipment, And Restaurant Closing Costs (Impairment And Disposal Costs Included In Impairment And Other Charges) (Details) $ in Thousands | 12 Months Ended
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Sep. 30, 2018 USD ($) restaurant | Oct. 01, 2017 USD ($) restaurant | Oct. 02, 2016 USD ($) restaurant
Impairment, Disposition of Property and Equipment, and Restaurant Closing Costs [Line Items] |  |  |  |
Document Fiscal Year Focus |  | 2018 |  |
Business Exit Costs |  | $ 4,803 | $ 5,736 | $ 2,457
Impairment of Long-Lived Assets Held-for-use | [1] | $ 211 | 0 | 0
Number of Restaurants | restaurant |  | 10 |  |
Restructuring Costs |  | $ 10,647 | 3,631 | 3,531
Accelerated depreciation |  | 1,130 | 911 | 1,543
Gain (Loss) on Disposition of Property Plant Equipment |  | (1,627) | (2,891) | (2,280)
Impairment And Other Costs Net |  | 18,418 | 13,169 | 9,929
Continuing Operations [Member] |  |  |  |
Impairment, Disposition of Property and Equipment, and Restaurant Closing Costs [Line Items] |  |  |  |
Gain (Loss) on Disposition of Property Plant Equipment |  | $ 1,627 | $ 2,891 | $ 2,398
Jack in the box brand restaurant operations [Member] |  |  |  |
Impairment, Disposition of Property and Equipment, and Restaurant Closing Costs [Line Items] |  |  |  |
Number of Restaurants | restaurant |  | 2,237 | 2,251 | 2,255
[1] | (1)In 2018, impairment charges relate to our landlord’s sale of a restaurant property to a franchisee.

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- Definition Amount of accelerated depreciation recognized in the period due to a long-lived asset being replaced or disposed of prior to the end of its useful life. Not associated with a disposal group or restructuring. + References No definition available. + Details
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- Definition Includes the charge against earnings resulting from accelerated depreciation, the aggregate of write down of assets from their carrying value to their fair value, lease reserves established when we cease using a property under an operating lease and subsequent adjustments to those reserves and other facility-related expenses from previously closed stores, as well as the net gain or loss on sales of real estate on which we formerly operated a Company restaurant that was closed. Also included within this balance are restructuring costs. + References No definition available. + Details
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 + Details
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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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