Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] State refund claim settlement Proceeds from Income Tax Refund, State and Local Occupancy and other Cost, Overhead Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Range [Domain] Statistical Measurement [Domain] Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Carrying Amount Reported Value Measurement [Member] Document Fiscal Year Focus Document Fiscal Year Focus Revenue, remaining performance obligation, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Adjustment to Compensation, Amount Adjustment to Compensation Amount Franchise tenant improvement allowances Deferred Rent Receivables, Net Segment Reporting [Abstract] Common stock $0.01 par value, 175,000,000 shares authorized, 83,176,452 and 83,012,784 issued and outstanding, respectively Common Stock, Value, Issued Payroll tax payments for equity award issuances Payment, Tax Withholding, Share-Based Payment Arrangement Payroll and related taxes Employee-related Liabilities, Current Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Other assets, net Other assets, net Other Assets, Miscellaneous, Noncurrent Legal accruals Loss Contingency Accrual Series 2022-1 Class A-1 Notes Series 2022-1 Class A-1 Notes [Member] Series 2022-1 Class A-1 Notes Restatement Determination Date Restatement Determination Date Insurance Accrued Insurance, Current Jack In The Box Restaurants Jack In The Box Restaurants [Member] Jack In The Box Restaurants Proceeds from sale of business Proceeds from Divestiture of Businesses Impairment, Disposition of Property and Equipment, Restaurant Closing Costs and Restructuring Schedule of Impairment and Disposal Costs Included in Impairment and Other Charges [Table Text Block] Schedule of Impairment and Disposal Costs Included in Impairment and Other Charges [Table Text Block] Amendment Flag Amendment Flag Current liabilities: Liabilities, Current [Abstract] Provision for expected credit losses Accounts Receivable, Credit Loss Expense (Reversal) Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Franchisor Disclosure [Domain] Franchisor Disclosure [Domain] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Gain (Loss) on Disposition of Other Assets Gain (Loss) on Disposition of Other Assets Loss Contingencies [Table] Loss Contingencies [Table] Disposal Group, Held-for-Sale, Not Discontinued Operations Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] Performance conditions not satisfied at the end of the period (in shares) Excluded from Diluted Weighted-Average Shares, Performance Conditions Not Satisfied Excluded from Diluted Weighted-Average Shares, Performance Conditions Not Satisfied Leases [Abstract] Total long-term liabilities Liabilities, Noncurrent Finance lease obligations and other debt Lease Obligation and Other Debt Lease Obligation and Other Debt Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Property and equipment: Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Development fees Contract With Customer, Liability, Development Fees For Unopened Stores Contract With Customer, Liability, Development Fees For Unopened Stores Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Cash Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Long-term liabilities: Liabilities, Noncurrent [Abstract] Weighted-average shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Net cash flows used in investing activities Cash Provided by (Used in) Investing Activity, Continuing Operation Entity Address, City or Town Entity Address, City or Town Additional Information Related To Cash Flows Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Accounts and other receivables, net: Receivables [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Assets held for sale Assets held for sale Disposal Group, Including Discontinued Operation, Assets Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of presentation Basis of Accounting, Policy [Policy Text Block] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Inventories Disposal Group, Including Discontinued Operation, Inventory, Current Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Other pension and post-retirement expenses, net Other pension and post-retirement expenses, net Pension Cost (Reversal of Cost) Other assets, net Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Net cash flows provided by operating activities Cash Provided by (Used in) Operating Activity, Continuing Operation Investment Income [Table] Investment Income [Table] Treasury stock, at cost, 64,120,270 shares, respectively Treasury Stock, Value Recent accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Litigation Case [Axis] Litigation Case [Axis] Land Land [Member] Schedule of Operating Segments Segment Reporting [Table Text Block] (Gains) losses on the disposition of property and equipment, net Losses (gains) on disposition of property and equipment, net Gain (Loss) on Disposition of Property Plant Equipment Other long-term liabilities: Liabilities, Other than Long-Term Debt, Noncurrent [Abstract] Other comprehensive income: Other Comprehensive Income (Loss), before Tax [Abstract] Use of estimates Use of Estimates, Policy [Policy Text Block] Deferred finance cost amortization Amortization of Debt Issuance Costs Other comprehensive income, net of taxes Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Tax effect Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Total debt Long-term debt Total debt Long-Term Debt Number of perspective purchasers Number of Perspective Purchasers Number of Perspective Purchasers Stockholder Rights Plan, Purchase Discount, Percent Stockholder Rights Plan, Purchase Discount, Percent Stockholder Rights Plan, Purchase Discount, Percent Document Period End Date Document Period End Date Changes in assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Discontinued Operations, Held-for-Sale Discontinued Operations, Held-for-Sale [Member] Current liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities, Current STOCKHOLDERS EQUITY AND REPURCHASES OF COMMON STOCK Equity [Text Block] Net earnings (loss) per share - basic: Earnings Per Share, Basic [Abstract] Operating costs and expenses, net: Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name LEASES Lessor, Operating Leases [Text Block] Series 2019 Class A-2 Notes Series 2019-1 Class A-2-I Notes [Member] Series 2019-1 Class A-2-I Notes Fiscal year Fiscal Period, Policy [Policy Text Block] SUPPLEMENTAL CONSOLIDATED CASH FLOW INFORMATION Cash Flow, Supplemental Disclosures [Text Block] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Franchisor Disclosure [Line Items] Franchisor Disclosure [Line Items] Current operating lease liabilities Operating Lease, Liability, Current Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] AVERAGE SHARES OUTSTANDING Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Reconciliation Of Basic Weighted-Average Shares Outstanding To Diluted Weighted-Average Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Financial Guarantee Financial Guarantee [Member] Accelerated depreciation Accelerated Depreciation 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. Trading Symbol Trading Symbol Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Accounts and other receivables, net Disposal Group, Including Discontinued Operation, Accounts And Other Receivables, Current Disposal Group, Including Discontinued Operation, Accounts And Other Receivables, Current Company Selected Measure Name Company Selected Measure Name Transaction [Domain] Transaction [Domain] Income tax (benefit) expense Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Excluded from diluted weighted-average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract] Pension and post-retirement expense Pension and Other Postretirement Benefits Cost (Reversal of Cost) Non-cash investing and financing transactions: Noncash Investing and Financing Items [Abstract] Net earnings (loss) per share - diluted: Earnings Per Share, Diluted [Abstract] Operating lease income - closed restaurants and other Operating Lease Income, Closed Restaurants and Other Operating Lease Income, Closed Restaurants and Other (Losses) earnings from discontinued operations (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share Proceeds from Divestiture of Businesses, Net of Cash Divested Proceeds from Divestiture of Businesses, Net of Cash Divested Intangible assets, net Disposal Group, Including Discontinued Operation, Intangible Assets, Finite-Lived Disposal Group, Including Discontinued Operation, Intangible Assets, Finite-Lived Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Segment profit Segment Operating Profit Segment Operating Profit Accounts payable Disposal Group, Including Discontinued Operation, Accounts Payable, Current Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Weighted-average number of shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Franchise rental revenues Franchise rental revenues Franchise Franchise [Member] Prepaid expenses Disposal Group, Including Discontinued Operation, Prepaid Expenses, Current Disposal Group, Including Discontinued Operation, Prepaid Expenses, Current Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Disposal Group Name [Domain] Disposal Group Name [Domain] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Movement in Deferred Revenue [Roll Forward] Movement in Deferred Revenue [Roll Forward] Dividends declared Dividends Operating lease right-of-use assets Disposal Group, Including Discontinued Operation, Operating Lease, Right-Of-Use Asset Disposal Group, Including Discontinued Operation, Operating Lease, Right-Of-Use Asset Disposal Groups, Including Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Other Assets, Noncurrent, Other than Noncurrent Investments and Property, Plant and Equipment Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] General, administrative, and other unallocated Other General and Administrative Expense Award Timing Predetermined Award Timing Predetermined [Flag] Restricted cash Restricted Cash, Current Treasury Stock Treasury Stock, Common [Member] Number of former employees Number of Former Employees Number of Former Employees Net cash (used in) provided by operating activities of discontinued operations Cash Provided by (Used in) Operating Activity, Discontinued Operation Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Quoted Prices In Active Markets For Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Effective income tax rates Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] ASSETS HELD FOR SALE Summary Of Refranchisings Franchisee Development And Acquisitions Text Block [Text Block] Summary of Refranchisings, Franchisee Development and Acquisitions. Lessor, Lease, Description [Table] Lessor, Lease, Description [Table] Effect of potentially dilutive securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements All Executive Categories All Executive Categories [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Repayments of borrowings on revolving credit facilities Repayments of Long-Term Lines of Credit Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Interest expense, net Disposal Group, Including Discontinued Operation, Interest Income (Expense) Disposal Group, Including Discontinued Operation, Interest Income (Expense) Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Notes receivable, current portion Financing Receivable, before Allowance for Credit Loss, Current Gains on the sale of company-operated restaurants Disposal Group, Including Discontinued Operation, Gains On Sales Of Restaurants Disposal Group, Including Discontinued Operation, Gains On Sales Of Restaurants Renewal term of operating lease Lessee, Operating Lease, Renewal Term Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Series 2022-1 Class A-2-I Notes Series 2022-1 Class A-2-I Notes [Member] Series 2022-1 Class A-2-I Notes Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Franchise royalties Royalty [Member] Current maturities of long-term debt Less current maturities of long-term debt Long-Term Debt and Lease Obligation, Current SEGMENT REPORTING Segment Reporting [Text Block] Amounts drawn under letter agreement Long-Term Line of Credit Minimum Minimum [Member] Excess company owned life insurance funds withdrawn Excess Company Owned Life Insurance Funds Withdrawn Excess Company Owned Life Insurance Funds Withdrawn Expiration Date Trading Arrangement Expiration Date 2030 Long-Term Debt, Maturity, Year Four Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Cash and restricted cash Restricted Cash and Cash Equivalent Earnings from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Earnings from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Buildings Building [Member] Disposal Group, Including Discontinued Operations [Line Items] Disposal Group, Including Discontinued Operations [Line Items] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Operating costs Disposal Group, Including Discontinued Operation, Operating Expense Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Other current assets Disposal Group, Including Discontinued Operation, Other Assets, Current Common stock, shares authorized (in shares) Common Stock, Shares Authorized (Gains) losses on COLI Cash Surrender Value Of Policies Cash Surrender Value Of Policies Other long-term liabilities Liabilities, Other than Long-term Debt and Operating Lease Liabilities, Noncurrent Liabilities, Other than Long-term Debt and Operating Lease Liabilities, Noncurrent Exercise Price Award Exercise Price Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Qdoba guaranteed leases, remaining term Lessee, Guaranteed Leases, Remaining Term Lessee, Guaranteed Leases, Remaining Term Segment Reporting [Line Items] Segment Reporting [Line Items] Document Quarterly Report Document Quarterly Report Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Total debt Long-term Debt, Gross And Lease Obligation Long-term Debt, Gross And Lease Obligation Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] Cash and restricted cash at beginning of period, including discontinued operations cash Cash and restricted cash at end of period, including discontinued operations cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation INDEBTEDNESS Debt Disclosure [Text Block] Marketing fees Advertising [Member] Company restaurant sales Restaurant Sales [Member] Restaurant Sales [Member] Repayments of long-term debt Repayments of Long-Term Debt Selling, general, and administrative expenses Disposal Group, Including Discontinued Operation, General and Administrative Expense Lease guarantee Contractual Obligation Disposal Group Classification [Domain] Disposal Group Classification [Domain] Less unamortized debt issuance costs Debt issuance cost Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Trade Accounts Receivable, before Allowance for Credit Loss, Current Total operating costs and expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Net proceeds received from the Del Taco sale Disposal Group, Including Discontinued Operation, Consideration Total stockholders’ deficit Beginning balance Ending balance Equity, Attributable to Parent Net cash used in financing activities of discontinued operations Cash Provided by (Used in) Financing Activity, Discontinued Operation Stockholder rights plan, beneficial interest needed to become exercisable Stockholder Rights Plan, Percentage Of Beneficial Interest Needed Stockholder Rights Plan, Percentage Of Beneficial Interest Needed ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Depreciation and amortization Disposal Group, Including Discontinued Operation, Depreciation and Amortization Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] J&D Restaurant Group v. Jack in the Box Inc. J&D Restaurant Group v. Jack in the Box Inc. [Member] J&D Restaurant Group v. Jack in the Box Inc. Intangible Asset, Including Goodwill, Impairment Loss Intangible Asset, Including Goodwill, Impairment Loss Insider Trading Policies and Procedures [Line Items] Balance as of beginning of period Balance as of end of period Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Damages awarded Loss Contingency, Damages Awarded, Value Performance share awards Performance Shares [Member] Purchases of assets intended for sale or leaseback Purchases Of Assets Held For Sale And Leaseback Purchases Of Assets Held For Sale And Leaseback Deferred income taxes Deferred Income Tax Expense (Benefit) Selling, general and administrative expenses Selling, General and Administrative Expense SUPPLEMENTAL CONSOLIDATED BALANCE SHEET INFORMATION Supplemental Balance Sheet Disclosures [Text Block] Non-current liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent Current maturities of long-term debt Disposal Group, Including Discontinued Operation, Current Portion Of Long-Term Debt Disposal Group, Including Discontinued Operation, Current Portion Of Long-Term Debt Prepaid and other current assets Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Franchise rental revenues Operating Lease, Lease Income Contractual obligation (percent) ContractualContributionsTowardsAdvertisingCostsPercentageOfSales ContractualContributionsTowardsAdvertisingCostsPercentageOfSales [Line Items] Antidilutive (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Number of operating segments Number of Operating Segments Del Taco Holdings Inc. Del Taco Holdings Inc. [Member] Del Taco Holdings Inc. Entity Central Index Key Entity Central Index Key Less accumulated depreciation and amortization Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Capital in excess of par value Additional Paid in Capital, Common Stock All Adjustments to Compensation All Adjustments to Compensation [Member] Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Property and equipment, net Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment, Noncurrent Company operated Entity Operated Units [Member] Sales and property taxes Accrued Sales and Property Taxes, Current Accrued Sales and Property Taxes, Current Remainder of 2026 Long-Term Debt, Maturity, Remainder of Fiscal Year Total liabilities classified as held for sale Disposal Group, Including Discontinued Operation, Liabilities Income Statement [Abstract] Income Statement [Abstract] Stockholders’ deficit: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Tax deficiency from share-based compensation arrangements Tax Deficiency (Excess Tax Benefit) From Share-Based Compensation Arrangement Tax Deficiency (Excess Tax Benefit) From Share-Based Compensation Arrangement Non Qualified Deferred Compensation Plan Non Qualified Deferred Compensation Plan [Member] The Non-Qualified Deferred Compensation Plan represents an unfunded defined contribution plan for key executives and others excluded from participation in the company's qualified savings plan. These items are measured at fair value on a recurring basis based on inputs readily available and are measured at fair value at successive reporting periods. Deferred tax assets Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Lessor, Lease, Description [Line Items] Lessor, Lease, Description [Line Items] City Area Code City Area Code Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] SUBSEQUENT EVENTS Subsequent Events [Text Block] Dividends paid on common stock Payments of Dividends Defined benefit pension plans Liability, Defined Benefit Pension Plan, Noncurrent Name Forgone Recovery, Individual Name Balance Sheet Related Disclosures [Abstract] Balance Sheet Related Disclosures [Abstract] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Net cash flows used in financing activities Cash Provided by (Used in) Financing Activity, Continuing Operation Statement [Line Items] Statement [Line Items] Total assets Assets Entity [Domain] Entity [Domain] Reportable Segment Reportable Segment [Member] Reportable Segment Allowance for credit losses Accounts Receivable [Policy Text Block] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Average Shares Outstanding [Line Items] Average Shares Outstanding [Line Items] Average shares outstanding line items Summary Of Refranchisings, Franchisee Development And Acquisitions [Abstract] Summary Of Refranchisings, Franchisee Development And Acquisitions [Abstract] Summary of refranchisings, franchisee development and acquisitions. Revenue Disposal Group, Including Discontinued Operation, Revenue Occupancy and other Occupancy, Net PEO PEO [Member] 2028 Long-Term Debt, Maturity, Year Two Measurement Basis [Axis] Measurement Basis [Axis] Other Other Liabilities, Noncurrent Deferred rent receivable Tenant Improvements Goodwill Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount (Gains) losses on cash surrender value of company-owned life insurance Gains (Losses) on cash surrender value of company-owned life insurance Gains and losses on the cash surrender value of Company-owned life insurance investments. Revenue recognized Contract with Customer, Liability, Revenue Recognized Subsequent Event Type [Domain] Subsequent Event Type [Domain] Retained Earnings Retained Earnings [Member] Discontinued Operations, Disposed of by Sale Discontinued Operations, Disposed of by Sale [Member] Long-term operating lease liabilities, net of current portion Operating Lease, Liability, Noncurrent Deferred franchise and development fees Deferred franchise fees, Accrued liabilities Deferred franchise fees, accrued liabilities Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Carrying Value and Estimated Fair Value of Notes Fair Value, by Balance Sheet Grouping [Table Text Block] Net (loss) earnings per share (in dollars per share) Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Total Shareholder Return Amount Total Shareholder Return Amount Variable lease income - franchise Operating Lease, Variable Lease Income Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation (Losses) earnings from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Litigation Case [Domain] Litigation Case [Domain] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] 2029 Long-Term Debt, Maturity, Year Three Long-term debt, net of current maturities Disposal Group, Including Discontinued Operation, Long-Term Debt, Net Of Current Maturities Disposal Group, Including Discontinued Operation, Long-Term Debt, Net Of Current Maturities Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Property and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Unused borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Net Investment Income [Line Items] Net Investment Income [Line Items] Principal repayments on debt Repayments of Other Long-Term Debt Franchise contributions for advertising and other services Franchise contributions for advertising and other services [Member] Franchise contributions for advertising and other services [Domain] Current assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Franchise support and other costs Franchise, Support and Other Costs Franchise, Support and Other Costs Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Net cash provided by discontinued operations Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect, Discontinued Operation Underlying Securities Award Underlying Securities Amount Summary of Allowance for Doubtful Accounts Accounting Standards Update and Change in Accounting Principle [Table Text Block] Fair Value Estimate of Fair Value Measurement [Member] REVENUE Revenue from Contract with Customer [Text Block] Operating lease right-of-use assets and lease liabilities Increase (Decrease) in Deferred Initial Direct Cost, Lease Prepaid expenses Prepaid Expense, Current Cash Cash Food and packaging Cost, Direct Material Construction in progress Construction in Progress [Member] Other Payment for (Proceeds from) Other Investing Activity Inventories Increase (Decrease) in Inventories Indemnity obligation Disposal Group, Including Discontinued Operation, Indemnity Obligation Disposal Group, Including Discontinued Operation, Indemnity Obligation Segment Reporting [Table] Segment Reporting [Table] Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Additions Contract with Customer, Liability, Additions Contract with Customer, Liability, Additions Other current assets Other Assets, Current Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Earnings from operations Operating Income (Loss) Proceeds from the sale and leaseback of assets Proceeds From Assets Held For Sale and Leaseback Proceeds From Assets Held For Sale and Leaseback Remaining performance obligations Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Series 2022-1 Class A-2-I Variable Funding Notes Series 2022-1 Variable Funding Senior Secured Notes, Class A-2-I [Member] Series 2022-1 Variable Funding Senior Secured Notes, Class A-2-I Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Shares issued under stock plans, including tax benefit (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture Other long-term liabilities, including note payable Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Cash dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Shares issued under stock plans, including tax benefit Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Transition services agreement, fees Contractually Specified Servicing Fees, Amount Operating restaurant impairment charges Asset, Impairment Loss Recovery of Erroneously Awarded Compensation Disclosure [Line Items] General, administrative, and other unallocated Restructuring Costs Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Treasury stock (in shares) Treasury Stock, Common, Shares Equity Components [Axis] Equity Components [Axis] Product and Service [Domain] Product and Service [Domain] Income tax payments, net of refunds (1) Income Tax Paid, after Refund Received Franchisor Disclosure [Axis] Franchisor Disclosure [Axis] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Franchise tenant improvement allowance and incentive disbursements Payments for (Proceeds from) Tenant Allowance Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Marketing and advertising expense Marketing and Advertising Expense Termination Date Trading Arrangement Termination Date Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Subsequent Events [Abstract] Subsequent Events [Abstract] Losses from discontinued operations, net of taxes Losses from discontinued operations Losses from discontinued operations, net of taxes Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] DISCONTINUED OPERATIONS Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Franchise expenses Costs of Franchised Outlets Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Interest expense, net Interest expense, net Interest Income (Expense), Operating MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Total other assets Other Assets, Noncurrent Document Type Document Type Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Accrued liabilities Accrued liabilities Accrued Liabilities, Current Impairment charges Other Asset Impairment Charges Fair Value as of Grant Date Award Grant Date Fair Value Increase in dividends accrued or converted to common stock equivalents Increase (Decrease) in Dividends Accrued or Converted to Stock Equivalents Increase (decrease) in dividends accrued or converted to stock equivalents, adjustment to dividends paid, financing activities Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Repurchase of common stock, remaining authorized amount Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Estimated Future Franchise Fees [Abstract] Estimated Future Franchise Fees [Abstract] Estimated Future Franchise Fees [Abstract] Local Phone Number Local Phone Number Schedule of Franchisor Disclosure [Table] Franchisor, Ownership [Table] Deferred tax liabilities Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Nonvested stock awards and units Nonvested Stock Awards And Units [Member] Nonvested Stock Awards and Units [Member] Earnings before income taxes Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Revenues Revenues Property and equipment, at cost Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Net cash provided by (used in) investing activities of discontinued operations Cash Provided by (Used in) Investing Activity, Discontinued Operation Other assets: Other assets, net: Other Assets [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Franchise occupancy expenses Franchise Occupancy Expenses Franchise Occupancy Expenses LIABILITIES AND STOCKHOLDERS’ DEFICIT Liabilities and Equity [Abstract] Indemnity obligation, term Disposal Group, Including Discontinued Operation, Indemnity Obligation, Term Disposal Group, Including Discontinued Operation, Indemnity Obligation, Term Financial Assets and Liabilities 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Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Legal Entity [Axis] Legal Entity [Axis] Notes receivable, less current portion Financing Receivable, before Allowance for Credit Loss, Noncurrent Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Purchases of treasury stock Treasury Stock, Value, Acquired, Cost Method Term of franchise Contract With Customer, Liability, Initial Franchise Fees, Term Contract With Customer, Liability, Initial Franchise Fees, Term Accruals for legal matters Accrued Professional Fees, Current Operating lease income - franchise Operating Lease, Lease Income, Lease Payments Accounts payable Increase (Decrease) in Accounts Payable Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Food and packaging Jack in the Box Brand Restaurant Operations [Member] Jack in the Box Brand Restaurant Operations [Member] Schedule of Debt Schedule of Debt [Table Text Block] Disposal Group Name [Axis] Disposal Group Name [Axis] Operating loss from discontinued operations before income taxes Disposal Group, Including Discontinued Operation, Operating Income (Loss) 2027 Long-Term Debt, Maturity, Year One Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Net (loss) earnings per share (in dollars per share) Earnings Per Share, Basic Deferred rent income Contract with Customer, Liability, Current Repurchases of common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Range [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Specified maximum leverage ratio Debt Covenant, Specified Maximum Leverage Ratio Debt Covenant, Specified Maximum Leverage Ratio Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Trademarks Disposal Group, Including Discontinued Operation, Intangible Assets, Indefinite-Lived Disposal Group, Including Discontinued Operation, Intangible Assets, Indefinite-Lived Retained earnings Retained Earnings (Accumulated Deficit) Series 2022-1 Class A-2-II Notes Series 2022-1 Class A-2-II Notes [Member] Series 2022-1 Class A-2-II Notes Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Number of reporting units Goodwill, Reporting Unit, Number Advertising costs Advertising Cost [Policy Text Block] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Total liabilities at fair value Obligations, Fair Value Disclosure Common Stock Common Stock [Member] Gains on the sale of company-operated restaurants Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Decrease in obligations for purchases of property and equipment Increase (Decrease) in Construction Payables Fair Value Measurement [Domain] Fair Value Measurement [Domain] Lease Income Operating Lease, Lease Income [Table Text Block] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover page. Cover [Abstract] Series 2022 Class A-2 Notes Series 2019-1 Class A-2-II Notes Series 2019 Class A-2-II Notes [Member] Series 2019 Class A-2-II Notes 46124 Gessele v. Jack in the Box Inc. [Member] Gessele v. Jack in the Box Inc. Equity Awards Adjustments Equity Awards Adjustments [Member] Non-current assets held for sale Disposal Group, Including Discontinued Operation, Assets, Noncurrent Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total liabilities and stockholders' equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Company-owned life insurance policies Life Insurance, Corporate or Bank Owned, Amount Segments [Axis] Segments [Axis] Line of credit issued Line of Credit Issued Line of Credit Issued Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Schedule of Weighted Average Number of Shares [Table] Schedule of Average Shares Outstanding [Table] Schedule of Average Shares Outstanding [Table] Tabular List, Table Tabular List [Table Text Block] Actuarial gains and prior service costs reclassified to earnings Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax Other operating expenses, net Other operating expenses, net Other Operating Income (Expense), Net Pre-opening costs Pre-Opening Costs Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Thereafter Long-Term Debt, Maturity, after Year Four Long-Term Debt, Maturity, after Year Four Loss on Del Taco sale Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Property and equipment, net: Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization [Abstract] Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Pre-opening costs Disposal Group, Including Discontinued Operation, Pre-Opening Costs Disposal Group, Including Discontinued Operation, Pre-Opening Costs Accounts and other receivables, net Accounts and other receivables, net Receivables, Net, Current Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock $0.01 par value, 15,000,000 shares authorized, none issued Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Other Other Receivables, Gross, Current Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest payments Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Pension and post-retirement contributions Payment for Pension and Other Postretirement Benefits Accrued liabilities Disposal Group, Including Discontinued Operation, Accrued Liabilities, Current Franchise fees and other services Franchise Fees [Member] Franchise Fees [Member] Franchise royalties and other Royalty and Other [Member] Royalty and Other [Member] OTHER OPERATING EXPENSE, NET Restructuring and Related Activities Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Long-term debt, net of current maturities Long-Term Debt and Lease Obligation Series 2019-1 Class A-2-III Notes Series 2019-1 Class A-2-III Notes [Member] Series 2019-1 Class A-2-III Notes Payroll and employee benefits Cost, Direct Labor Technology and sourcing fees Technology Service [Member] Discontinued Operations and Disposal Groups [Abstract] Name Measure Name Accrued liabilities, including current note payable Disposal Group, Including Discontinued Operation, Accrued Liabilities, Including Current Note Payable Disposal Group, Including Discontinued Operation, Accrued Liabilities, Including Current Note Payable INCOME TAXES Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Current operating lease liabilities Disposal Group, Including Discontinued Operation, Operating Lease Liability, Current Disposal Group, Including Discontinued Operation, Operating Lease Liability, Current Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Schedule of Supplemental Balance Sheet Disclosures Schedule of Supplemental Balance Sheet Disclosures [Table Text Block] Schedule of Supplemental Balance Sheet Disclosures Capital in Excess of Par Value Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Other transaction costs incurred as part of the Del Taco sale Disposal Group, Including Discontinued Operation, Other Transaction Costs Disposal Group, Including Discontinued Operation, Other Transaction Costs Name Trading Arrangement, Individual Name Franchise advertising and other services expenses Advertising Expense Net cash flows used in continuing operations Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect, Continuing Operation Company Selected Measure Amount Company Selected Measure Amount Amortization of franchise tenant improvement allowances and incentives Amortization of Franchise Tenant Improvement Allowances and Incentives Amortization of Franchise Tenant Improvement Allowances and Incentives Income tax receivable (1) Income Taxes Receivable Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization Retirement Plan Name [Axis] Retirement Plan Name [Axis] Amortization of sublease assets and liabilities, net Amortization Of Favorable And Unfavorable Lease Amortization Of Favorable And Unfavorable Lease Current assets: Assets, Current [Abstract] Deferred franchise and development fees Deferred Franchise Fees, Noncurrent Deferred Franchise Fees, Noncurrent Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Right-of use assets obtained in exchange for operating lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Income tax expense Income Tax Expense (Benefit) Nature of operations Nature of Operations [Policy Text Block] Nature of Operations [Policy Text Block] Adjustments to reconcile net loss to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Award Timing Method Award Timing Method [Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Other operating expense, net Disposal Group, Including Discontinued Operation, Other Operating Expense Disposal Group, Including Discontinued Operation, Other Operating Expense Restaurant and other equipment Restaurant And Other Equipment [Member] Restaurant And Other Equipment Net earnings (loss) Net earnings (loss) Net loss Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Proceeds from the sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Remaining Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Other long-term liabilities Liabilities, Other than Long-Term Debt, Noncurrent Changes in Contract Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Accounts and other receivables Increase (Decrease) in Receivables Earnings from continuing operations Earnings from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Current assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current, Company Portion Disposal Group, Including Discontinued Operation, Assets, Current, Company Portion Transaction-related costs Disposal Group, Including Discontinued Operation, Professional Fees Disposal Group, Including Discontinued Operation, Professional Fees Franchise-operated Franchised Units [Member] Accrued liabilities: Accrued Liabilities [Abstract] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]