Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items].

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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The amount of intangibles that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The amount of inventory that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The value of an asset or business acquired in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The total amount of [all] liabilities that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Amount of noncash consideration received for selling an asset or business through a noncash (or part noncash) transaction.

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The number of franchises purchased during the period when there are significant changes in franchisor-owned outlets or franchised outlets during the period.

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The number of franchises sold during the period when there are significant changes in franchisor-owned outlets or franchised outlets during the period.

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Summary Of Refranchisings, Franchisee Development And Acquisitions (Purchase Price Allocations On Franchise Acquisitions) (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2018 restaurant	Oct. 01, 2017 USD ($) restaurant	Oct. 02, 2016 restaurant
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Number of Restaurants \| restaurant	135	178	1
Restaurants acquired from franchisees (restaurants)		50	1
Goodwill, Acquired During Period		$ 13,059
Property and equipment		(2,470)
Noncash or Part Noncash Acquisition, Intangible Assets Acquired		1,260
Noncash or Part Noncash Acquisition, Inventory Acquired		189
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed		(1,116)
Business Combination, Consideration Transferred		15,862
Noncash or Part Noncash Divestiture, Amount of Consideration Received		13,800
Noncash or Part Noncash Acquisition, Payables Assumed		3,900
Accounts Receivable [Member]
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Noncash or Part Noncash Divestiture, Amount of Consideration Received		9,900
Jack in the box brand restaurant operations [Member]
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Goodwill, Acquired During Period		$ 13,059