Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Title of 12(b) Security Title of 12(b) Security Impaired long-lived assets held and used by type Impaired Long-Lived Assets Held and Used by Type [Axis] Reported Value Measurement Reported Value Measurement [Member] Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Sales-type leases, selling profit Sales-type and Direct Financing Leases, Profit (Loss) Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Fair value of assets and liabilities (other than cash and cash equivalents) measured at fair value on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Restructuring Plan Restructuring Plan [Axis] Common stock, $0.10 par value; 1,500,000 shares authorized; 470,424 shares issued; 190,639 and 190,324 shares outstanding, respectively Common Stock, Value, Issued Payments related to tax withholding for share-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Long-term debt Schedule of Long-Term Debt Instruments [Table Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Guarantor Obligations, Maximum Exposure, Undiscounted Guarantor Obligations, Maximum Exposure, Undiscounted Line of Credit [Member] Line of Credit [Member] TimWen TimWen [Member] Investment in joint venture with Tim Hortons Inc [Member] Measurement Frequency Measurement Frequency [Axis] Amendment Flag Amendment Flag Current liabilities: Liabilities, Current [Abstract] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Repayments of finance lease liabilities Finance Lease, Principal Payments Franchisor Disclosure Franchisor Disclosure [Domain] Investments Investment [Text Block] Advertising Funds Expense Advertising Funds Expense [Member] Advertising Funds Expense Leases [Abstract] Leases [Abstract] Transactions with Related Parties Related Party Transactions Disclosure [Text Block] Property, Plant, and Equipment [Abstract] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province Foreign currency translation adjustment Foreign currency translation adjustment included in “Other comprehensive (loss) income” and other Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Common Stock, Par Value Common Stock, Par or Stated Value Per Share Series 2025-1 Class A-2-I Notes Series 2025-1 Class A-2-I Notes [Member] Series 2025-1 Class A-2-I Notes Impairment of Long-Lived Assets Asset, Impairment [Text Block] Other intangible assets Intangible Asset, Excluding Goodwill, after Accumulated Amortization Share Repurchase Program Share Repurchase Program [Domain] Weighted average basic shares outstanding Weighted Average Number of Shares Outstanding, Basic Related Party Transaction, Purchases from Related Party Related Party Transaction, Purchases from Related Party Investments Long-Term Investments Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table] Total current liabilities Liabilities, Current Investments [Abstract] Investments [Abstract] Advertising (deficit) surplus Advertising funds surplus Advertising Funds Surplus (Deficit), Net Net amount of advertising funds revenue and advertising funds expense for the period. Yellow Cab Yellow Cab [Member] Yellow Cab Lease, Cost Lease, Cost [Abstract] Entity Address, City or Town Entity Address, City or Town Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Assets held for sale Disposal Group, Including Discontinued Operation, Assets Global Real Estate & Development Global Real Estate & Development [Member] Global Real Estate & Development segment Sales Sales at Company-operated restaurants Product [Member] Reconciliation of cash, cash equivalents and restricted cash at end of period: Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Sublease income Sublease Income Receivable Type Receivable [Domain] Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Other comprehensive (loss) income Other comprehensive income (loss) Foreign currency translation Other Comprehensive Income (Loss), Net of Tax Current portion of long-term debt Less amounts payable within one year Long-Term Debt, Current Maturities Advertising funds expense Advertising funds expense Advertising and promotional programs expense incurred by the advertising funds. Third-party and other costs Third-party and other costs Other Restructuring [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Long-Term Debt Instruments Schedule of Long-Term Debt Instruments [Table] Class of Treasury Stock Class of Treasury Stock [Table] Common stock held in treasury, at cost; 279,785 and 280,100 shares, respectively Treasury Stock, Value Capital expenditures included in accounts payable Capital Expenditures Incurred but Not yet Paid Net receipt of deferred vendor incentives Net Receipt of Deferred Vendor Incentives Total deferred cash receipt for vendor incentives, net of amounts recognized Segment Reporting Segment Reporting [Table Text Block] System optimization gains, net System optimization gains, net System optimization gains, net Gain (Loss) on Disposition of Property Plant Equipment Related Party Related and Nonrelated Parties [Axis] Repayments of Lines of Credit Repayments of Lines of Credit Total debt Long-Term Debt System Optimization Gains, Net Property, Plant, and Equipment [Text Block] Guarantor Obligations Guarantor Obligations [Line Items] Supplemental non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Document Period End Date Document Period End Date Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Stockholders' Equity Equity [Text Block] Restructuring and Related Cost, Cost Incurred to Date Restructuring and Related Cost, Cost Incurred to Date Security Exchange Name Security Exchange Name Assets Held for sale, Long Lived, Fair Value Disclosure Long-Lived Asset, Held-for-Sale, Fair Value Disclosure Second Borrowing Second Borrowing [Member] Second Borrowing Leases, Company as Lessor Lessor, Operating Leases [Text Block] Stock Repurchase Program, Excise Tax Accrual Stock Repurchase Program, Excise Tax Accrual Stock Repurchase Program, Excise Tax Accrual Supplemental Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Lessee, Lease, Description Lessee, Lease, Description [Line Items] Accumulated other comprehensive loss Balance at beginning of period Balance at end of period Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items Consolidation Items [Domain] Executory costs paid by lessee Executory Costs Paid By Lessee [Member] Executory costs paid by lessee. Change in operating lease liabilities Operating Lease, Payments Applied To Lease Liabilities Operating Lease, Payments Applied To Lease Liabilities Current portion of operating lease liabilities Operating Lease, Liability, Current Summary of Disposition Activity Property, Plant, and Equipment [Table Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Finance lease assets Finance Lease, Right-of-Use Asset, after Accumulated Amortization Schedule of Real Estate Properties Schedule of Real Estate Properties [Table Text Block] Net Income Per Share Earnings Per Share [Text Block] Net income per share: Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Statement Other Investment Not Readily Marketable [Table] Total liabilities Liabilities Trading Symbol Trading Symbol Restaurants leased or subleased to franchisees Properties and Other Intangible Assets, Franchisee Leased / Subleased Assets [Member] Represents properties and other intangible assets that are being leased and/or subleased to franchisees Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Component Component [Axis] A component of the corresponding concept. Land And Building - Leased Land And Building - Leased [Member] Property whose land and building are both leased by the Company. Credit Facility Credit Facility [Domain] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Net investment in sales-type and direct financing leases Net Investment in Lease, Excluding Accrued Interest, after Allowance for Credit Loss, Noncurrent Weighted average diluted shares outstanding Weighted Average Number of Shares Outstanding, Diluted Franchise fees Franchise [Member] Common Stock, Dividends, Per Share, Cash Paid Common Stock, Dividends, Per Share, Cash Paid Disaggregation of Revenue Disaggregation of Revenue [Line Items] Franchise royalty revenue and fees Franchise Royalty Revenue and Fees [Member] Franchise Royalty Revenue and Fees Entity Emerging Growth Company Entity Emerging Growth Company Related Party Transaction Related Party Transaction [Line Items] Proceeds from Lines of Credit Proceeds from Lines of Credit Loss on sales of restaurants, net Gain (Loss) on Disposition of Assets Before Post Closing Purchase Price Adjustments Gain (Loss) on Disposition of Assets Before Post Closing Purchase Price Adjustments Asset Arrangement Asset Arrangement [Domain] Asset Arrangement [Domain] Lessor Lease Income Lease Income, Lessor, Alternative Presentation [Abstract] Number of restaurants sold to franchisees Significant Changes, Franchises Sold Common Stock Held in Treasury Treasury Stock, Common [Member] Letters of Credit Outstanding, Amount Letters of Credit Outstanding, Amount Other comprehensive (loss) income: Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Effective Income Tax Rate Effective Income Tax Rate Reconciliation, Percent Variable lease income Variable Lease, Income Contract balances Contract balances [Line Items] [Line Items] for Contract balances [Table] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Other gain (loss) on disposition, net Other gain (loss) on disposition, net Other gain (loss) on disposition, net Net Assets Sold Net Assets Sold Net Assets Sold Lessor, Lease, Description Lessor, Lease, Description [Table] Dilutive effect of stock options and restricted shares Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Executory costs paid to lessor Executory Costs Paid To Lessor [Member] Executory Costs Paid To Lessor [Member] Series 2018-1 Class A-2-II Notes Series 2018-1 Class A-2-II Notes [Member] Series 2018-1 Class A-2-II Notes [Member] Franchise development fund Payments to Acquire Productive Assets - Franchise development fund The cash outflow for purchases of and capital improvements on property, plant and equipment related to the Franchise Development Fund, established in August 2021. Total finance lease cost Total Finance Lease Cost Total cost of finance leases including amortization of finance lease assets and interest incurred on finance lease liabilities. Distributions received from joint ventures, net of equity in earnings Distributions from Equity Method Investment, Net of Equity in Earnings Distributions from Equity Method Investment, Net of Equity in Earnings Operating lease assets Operating Lease, Right-of-Use Asset Net cash provided by operating activities Net cash provided by operating activities [Member] Net cash provided by operating activities Property Lease Guarantee Property Lease Guarantee [Member] Total operating lease cost Total Operating Lease Cost Total cost of operating leases including operating lease cost, variable lease cost and short-term lease cost. Guarantor Obligations, Nature Guarantor Obligations, Nature [Axis] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name Debt Instrument, Name [Domain] Franchise royalty revenue Royalty [Member] Segment Information Segment Reporting [Text Block] Asset, Impairment Loss [Abstract] Asset, Impairment Loss [Abstract] Wendy's U.S. Advertising Fund [Member] Wendy's U.S. Advertising Fund [Member] Wendy's U.S. Advertising Fund [Member] AMC AMC [Member] AMC Net cash provided by (used in) operations before effect of exchange rate changes on cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Long-term debt-related activities, net Operating activities from long-term debt, net Operating cash flows associated with long-term debt activities including non-cash financing and payments for debt extinguishment and cash flow hedges. Sequence of Borrowings of Lines of Credit [Axis] Sequence of Proceeds from Lines of Credit [Axis] Sequence of Proceeds from Lines of Credit Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement Location Location, Statement of Income, Balance [Axis] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Advertising funds restricted liabilities Advertising funds restricted liabilities Aggregate amount of liabilities associated with our advertising and promotional programs. Liabilities consist of obligations arising from the receipt of contributions to purchase advertising and promotional programs. Common Stock, Shares Authorized Common Stock, Shares Authorized Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income (Loss) [Line Items] Series 2019-1 Class A-2-II Notes Series 2019-1 Class A-2-II Notes [Member] Series 2019-1 Class A-2-II Notes [Member] Deferred franchise fee rollforward [Abstract] Deferred franchise fee rollforward Schedule of Restructuring and Related Costs Restructuring Cost [Table] Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Common stock issued upon vesting of restricted shares Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Related Party Transaction Related Party Transaction [Axis] Schedule of Equity Method Investments Schedule of Equity Method Investments [Line Items] Long lived assets held for sale Long-Lived Asset, Held-for-Sale [Line Items] Stock Repurchase Program, Authorized Amount Share Repurchase Program, Authorized, Amount Segment Reporting [Line Items] Segment Reporting [Line Items] Document Quarterly Report Document Quarterly Report Segments Segments [Domain] Long-Term Debt Debt Disclosure [Text Block] Advertising funds revenue Advertising [Member] Repayments of long-term debt Repayments of Long-Term Debt Unamortized debt issuance costs Debt Issuance Costs, Net Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Balance at beginning of period Balance at end of period Equity Method Investments Loss Contingency Accrual, Disclosures [Abstract] Loss Contingency [Abstract] Beginning balance Ending balance Restructuring Reserve Sale of other assets Sale of Other Assets [Member] Sale of Other Assets, including surplus properties, aircraft, equipment and other Equity Component Equity Component [Domain] Investment Income, Net [Abstract] Investment Income, Net [Abstract] Costs and expenses Costs and Expenses Supplemental Cash Flow Information Supplemental Cash Flow Information [Table Text Block] Supplemental Cash Flow Information Location, Statement of Cash Flows, Balance Location, Statement of Cash Flows, Balance [Domain] Location, Statement of Cash Flows, Balance [Domain] Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Cash dividends Dividends, Common Stock, Cash Total stockholders’ equity Stockholders' Equity, beginning of period Stockholders' Equity, end of period Equity, Attributable to Parent Income and Expenses, Lessor Income and Expenses, Lessor [Abstract] Restructuring Type Restructuring Type [Axis] 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 Notes receivable, net Increase (decrease) in notes receivable, net, for investing activities Cash inflow (outflow) for notes receivable, net, for investing activities ASSETS Assets [Abstract] Fair Value, Measurements, Nonrecurring Fair Value, Nonrecurring [Member] Other Operating Income Other Operating Income January 2023 Share Repurchase Program January 2023 Share Repurchase Program [Member] January 2023 Share Repurchase Program Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Deferred income tax Deferred Income Tax Expense (Benefit) Type of Restructuring Type of Restructuring [Domain] 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 Other reorganization and realignment plans Other Reorganization and Realignment Plans [Member] Other Reorganization and Realignment Plans Franchise rental income Operating Lease, Lease Income Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount New deferrals due to cash received and other Deferred Revenue, Additions Entity Central Index Key Entity Central Index Key Stock Repurchase Program, Cost Incurred Stock Repurchase Program, Cost Incurred Stock Repurchase Program, Cost Incurred TimWen and Brazil JV TimWen Investment [Member] TimWen Investment [Member] Schedule of Guarantor Obligations Guarantor Obligation [Table] Equity [Abstract] Equity [Abstract] Restructuring and Related Cost, Incurred Cost Charges Restructuring and Related Cost, Incurred Cost Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Franchised Units, Total [Member] Franchised Units, Total [Member] Franchised Units, Total Entity Operated Units Entity Operated Units [Member] Legal and Environmental Matters Legal Matters and Contingencies [Text Block] Other Stockholders' Equity, Other Schedule of long lived assets held for sale Long-Lived Asset, Held-for-Sale [Table] Income Statement [Abstract] Income Statement [Abstract] Revenue [Abstract] Revenue [Abstract] Revenue [Abstract] Document Transition Report Document Transition Report Fair Value, Hierarchy Fair Value Hierarchy and NAV [Axis] Investment loss, net Investment loss, net Gain (Loss) on Investments Investment, Name Investment, Name [Axis] Statement Share Repurchase Program [Table] Restructuring Plan Restructuring Plan [Domain] Long-term finance lease liabilities Finance Lease, Liability, Noncurrent Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Lessor, Lease, Description Lessor, Lease, Description [Line Items] City Area Code City Area Code Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Debt instrument Debt Instrument, Fair Value Disclosure Dividends Payments of Dividends First Borrowing First Borrowing [Member] First Borrowing Statement Statement [Line Items] Total assets Assets Entity Entity [Domain] Franchise support and other costs Unallocated franchise support and other costs Franchisor Costs New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Operating Segments Operating Segments [Member] Interest expense, net Interest expense, net Interest Expense, Nonoperating Other investments in equity securities Equity Securities without Readily Determinable Fair Value, Amount Measurement Basis Measurement Basis [Axis] Other liabilities Other Liabilities, Noncurrent Goodwill Goodwill Subsequent Event Type [Domain] Subsequent Event Type [Domain] Recruitment and relocation costs Employee Relocation [Member] Retained Earnings Retained Earnings [Member] Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Amortization of purchase price adjustments Amortization of Purchase Price Adjustment Amortization of Purchase Price Adjustment Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Common Stock, Shares Outstanding Common Stock, Shares, Outstanding Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Diluted Diluted net income per share Earnings Per Share, Diluted Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Changes in operating assets and liabilities and other, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cloud computing arrangements expenditures Payments for Cloud Computing Arrangements The cash outflow for payments due to cloud computing arrangements. Guarantees and Other Commitments and Contingencies Commitments Contingencies and Guarantees [Text Block] Assets Held and used, Long Lived, Fair Value Disclosure Property, Plant, and Equipment, Fair Value Disclosure Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Properties Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Line of Credit, Outstanding, Amount Line of Credit, Current Royalty, Advertising Fund, Lease and Other Income Royalty, Advertising Fund, Lease, and Other Income [Member] Royalty, Advertising Fund, Lease, and Other Income Investment Income, Net [Abstract] Net Investment Income [Line Items] Schedule of Restructuring Reserve by Type of Cost Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Common stock issued upon exercises of stock options Stock Issued During Period, Value, Stock Options Exercised Share Repurchase Program [Line Items] Share Repurchase Program [Line Items] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Revenue Revenue from Contract with Customer [Text Block] Post closing adjustments on sales of restaurants Post closing adjustments on sales of restaurants Post Closing Adjustments on Sales of Restaurants Share Repurchase Program, Excise Tax Share Repurchase Program, Excise Tax Equity in earnings for the period, net of amortization of purchase price adjustments Equity in Earnings, Net of Amortization of Purchase Price Adjustment Equity in earning for the period, net of amortization of purchase price adjustments Segment Reporting [Table] Segment Reporting [Table] Schedule of Related Party Transactions, by Related Party Related Party Transaction [Table] Guarantees [Abstract] Guarantees [Abstract] Schedule of Equity Method Investments Equity Method Investment [Table] System Optimization System Optimization Initiative System Optimization [Member] System optimization initiative for re-franchising as a part of Wendy's brand transformation. Lease, Cost Lease, Cost [Table Text Block] Share-based compensation Share Based Compensation Expense [Member] Share Based Compensation Expense related to restructuring [Member] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Sale of Company-Operated Restaurants to Franchisees [Member] Sale of Company-Operated Restaurants to Franchisees [Member] Sale of Company-Operated Restaurants to Franchisees Operating profit Segment profit Operating Income (Loss) Revenue, Anticipated Future Recognition of Deferred Franchise Fees, Amount Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Related Party Transaction Related Party Transaction [Domain] Entity File Number Entity File Number Organizational Redesign Organizational redesign Organizational Redesign [Member] Organizational Redesign Impairment of Long-Lived Assets Long-Lived Asset, Held and Used, Impairment [Table] Impairment of long-lived assets Impairment of long-lived assets Impairment of long-lived assets Asset, Impairment Loss Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Senior Notes Senior Notes Common Stock, Shares Issued Common Stock, Shares, Issued Basis of Presentation Business Description and Basis of Presentation [Text Block] Short-term Contract with Customer Short-Term Contract with Customer [Member] Treasury Stock, Shares Treasury Stock, Common, Shares Long-lived assets held for sale by asset type Long lived assets held for sale Long-Lived Asset, Held-for-Sale, Type [Axis] Equity Components Equity Components [Axis] Product and Service Product and Service [Domain] Second Repayment Second Repayment [Member] Second Repayment Franchisor Disclosure Franchisor Disclosure [Axis] Disaggregation of Revenue Disaggregation of Revenue [Table] Surplus properties Surplus Properties [Member] Surplus Properties [Member] Entity Interactive Data Current Entity Interactive Data Current Current portion of finance lease liabilities Finance Lease, Liability, Current Deferred income taxes Deferred Income Tax Liabilities, Net Impaired long-lived assets held and used, asset name Impaired Long-Lived Assets Held and Used, Asset Name [Domain] Entity Small Business Entity Small Business Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent System Optimization Gains, Net Property, Plant, and Equipment [Line Items] Effective Income Tax Rate Reconciliation Effective Income Tax Rate Reconciliation [Table] Fair Value Measurements, Nonrecurring Fair Value, Recurring and Nonrecurring [Table] Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Series 2021-1 Class A-2-II Notes Series 2021-1 Class A-2-II Notes [Member] Series 2021-1 Class A-2-II Notes [Member] Sequence of Proceeds from Lines of Credit [Domain] Sequence of Proceeds from Lines of Credit [Domain] Sequence of Proceeds from Lines of Credit [Domain] Sequence of Repayments of Lines of Credit [Axis] Sequence of Repayments of Lines of Credit [Axis] Sequence of Repayments of Lines of Credit Other assets Other Assets, Noncurrent Document Type Document Type Fair Value, Assets and Liabilities Measured on Nonrecurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Accrued expenses and other current liabilities Accrued Liabilities, Current Stock Repurchase Program, Remaining Authorized Repurchase Amount Share Repurchase Program, Remaining Authorized, Amount Operating Costs and Expenses Operating Costs and Expenses Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Proceeds from long-term debt Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Deferred franchise fees Deferred franchise fees, noncurrent Contract with Customer, Liability, Noncurrent Consolidation Items Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Commitments and contingencies Commitments and Contingencies Revenues Total revenues Revenues Revenues Sequence of Repayments of Lines of Credit [Domain] Sequence of Repayments of Lines of Credit [Domain] Sequence of Repayments of Lines of Credit [Domain] Equity in earnings for the period Income (Loss) from Equity Method Investments Amortization of finance lease assets Finance Lease, Right-of-Use Asset, Amortization Receivable Type Receivable Type [Axis] Costs and expenses: Operating Costs and Expenses [Abstract] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Sale of franchise-operated restaurants to franchisees Sale of franchise-operated restaurant to franchisee [Member] Sale of franchise-operated restaurant to franchisee [Member] Inventories Inventory, Net Interest on finance lease liabilities Finance Lease, Interest Expense Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Revenue, Anticipated Future Recognition of Deferred Franchise Fees Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Location, Statement of Cash Flows, Balance Location, Statement of Cash Flows, Balance [Axis] Location, Statement of Cash Flows, Balance Non-cash rental expense, net Noncash Rent Expense (Income) Non-cash rent expense (income) Deferred franchise fees at beginning of period Deferred franchise fees at end of period Contract with Customer, Liability Other segment items Segment Reporting, Other Segment Item, Amount Property, Plant and Equipment, Type System Optimization Gains, Net Long-Lived Asset, Class [Axis] Entity Tax Identification Number Entity Tax Identification Number Legal Entity Legal Entity [Axis] Amortization of cloud computing arrangements Amortization of cloud computing arrangements Amortization of cloud computing arrangements Amortization of cloud computing arrangements Land And Building - Company Owned Land And Building - Company Owned [Member] Property whose land and building are both owned by the Company. Lessee, Lease, Description Lessee, Lease, Description [Table] Repurchases of common stock Treasury Stock, Value, Acquired, Cost Method Payments Payments for Restructuring Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Operating lease income Operating Lease, Lease Income, Lease Payments Component Component [Domain] [Domain] for A component of the corresponding concept. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Restricted cash Restricted Cash and Cash Equivalent, Current Fair Value, Measurement Frequency Measurement Frequency [Domain] Debt Instrument Debt Instrument [Axis] Equity Method Investment, Ownership Percentage Equity Method Investment, Ownership Percentage Share-based compensation Share-Based Payment Arrangement, Noncash Expense Total lease cost Lease, Cost Investment, Name Investment, Name [Domain] Leases, Company as Lessee Lessee, Operating Leases [Text Block] Basic Basic net income per share Earnings Per Share, Basic Equity, Class of Treasury Stock Equity, Class of Treasury Stock [Line Items] Deferred franchise fees, current Contract with Customer, Liability, Current Repurchases of common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Long-term debt Total long-term debt Long-Term Debt, Excluding Current Maturities Short-term lease cost Short-Term Lease, Cost Accounts receivable, net, current Accounts Receivable, after Allowance for Credit Loss, Current Franchise rental income Real Estate [Member] Franchise Rental Expense Franchise Rental Expense [Member] Statement of Operations location: Franchise rental expense Retained earnings Retained Earnings (Accumulated Deficit) Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Product and Service Product and Service [Axis] Common Stock Common Stock [Member] Entity Operated Units, Total [Member] Entity Operated Units, Total [Member] Entity Operated Units, Total Fair Value Measurement Fair Value Measurement [Domain] Lease, Income Operating Lease, Lease Income [Table Text Block] Restructuring Charges, Incurred to Date Restructuring Charges, Incurred to Date Restructuring Charges, Incurred to Date Severance and related employee costs Employee Severance [Member] Operating lease cost Operating Lease, Cost Long-lived assets held for sale, name Long lived assets held for sale Long-Lived Assets Held-for-Sale, Name [Domain] Treasury Stock, Value, Acquired, Cost Method, excluding Commissions Treasury Stock, Value, Acquired, Cost Method, excluding Commissions and Excise Tax Treasury Stock, Value, Acquired, Cost Method, excluding Commissions and Excise Tax Impairment of Long-Lived Assets Long-Lived Asset, Held and Used, Impairment [Table Text Block] Asset Arrangement Asset Arrangement Asset Arrangement [Axis] Specifies whether the corresponding asset(s) being disclosed is/are owned or leased by the Company. Revenue, Anticipated Future Recognition of Deferred Franchise Fees Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total liabilities and stockholders’ equity Liabilities and Equity Variable lease cost Variable Lease, Cost Stock Repurchase Program, Repurchase Accrual Stock Repurchase Program, Repurchase Accrual Amount of shares repurchased and accrued for. Fair Value, Balance Sheet Grouping, Financial Statement Captions Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Segments Segments [Axis] Related Party Related and Nonrelated Parties [Domain] Reorganization and realignment costs Reorganization and realignment costs Reorganization and realignment costs Restructuring Charges Additional paid-in capital Additional Paid in Capital Other income, net Other Nonoperating Income (Expense) Other assets held for sale Other assets held for sale [Member] Other assets held for sale Franchise rental expense Franchise Rental Expense Expense incurred related to Franchise Rental Income. Other operating income, net Unallocated other operating income, net Other Operating Income (Expense), Net Stockholders’ equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Building - Company Owned; Land - Leased Building - Company Owned; Land - Leased [Member] Property whose building is owned by the Company and whose land is leased by the Company. General and Administrative Expense Unallocated general and administrative General and Administrative Expense Property, Plant and Equipment, Type System optimization (gains) losses, net Long-Lived Asset, Class [Domain] Receivables, Net, Current Receivables, Net, Current Property, Plant, and Equipment Property, Plant, and Equipment [Table] Equity Method Investment, Purchase Price Adjustment, Amortization Period Equity Method Investment, Purchase Price Adjustment, Amortization Period Equity Method Investment, Purchase Price Adjustment, Amortization Period Share Repurchase Program Share Repurchase Program [Axis] Restructuring Cost and Reserve Restructuring Cost and Reserve [Line Items] Company-operated restaurants Properties and Other Intangible Assets, Operating Restaurants [Member] Properties and Other Intangible Assets, Operating Restaurants Capital expenditures Payments to Acquire Productive Assets Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Dividends (Details) [Abstract] Dividends (Details) [Abstract] Dividends (Details) [Abstract] Series 2021-1 Class A-2-I Notes Series 2021-1 Class A-2-I Notes [Member] Series 2021-1 Class A-2-I Notes Credit Facility Credit Facility [Axis] Reorganization and Realignment Costs Restructuring and Related Activities Disclosure [Text Block] Total Assets, Fair Value Disclosure Revenue recognized during the period Deferred Revenue, Revenue Recognized Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Fair Value, Measurements, Fair Value Hierarchy Fair Value Hierarchy and NAV [Domain] Franchised Units, Other [Member] Franchised Units, Other [Member] Franchised Units, Other Debt Instrument [Line Items] Debt Instrument [Line Items] Corporate and Other Corporate Segment and Other Operating Segment [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Guarantor Obligations, Nature Guarantor Obligations, Nature [Domain] Number of restaurants Number of Restaurants Number of Restaurants Impairment of Long-Lived Assets Long-Lived Asset, Held and Used, Impairment [Line Items] Advertising fund expense Advertising Expense Contract Balances, deferred franchise fee rollforward Deferred Revenue, by Arrangement, Disclosure [Table Text Block] Cash and cash equivalents Cash and Cash Equivalent Distributions received Proceeds from Equity Method Investment, Distribution Reconciliation of Profit from Segments to Consolidated Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Depreciation and amortization (exclusive of amortization of cloud computing arrangements shown separately below) Depreciation and amortization (exclusive of amortization of cloud computing arrangements shown separately below) Depreciation and amortization (exclusive of amortization of cloud computing arrangements shown separately below) Depreciation, Depletion and Amortization Restricted cash, included in Advertising funds restricted assets Restricted Cash, Advertising Funds Restricted Assets Restricted Cash, Advertising Funds Restricted Assets Finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Current assets: Assets, Current [Abstract] Entity Address, Address Line One Entity Address, Address Line One Provision for income taxes Income Tax Expense (Benefit) First Repayment First Repayment [Member] First Repayment Wendy's International Wendy's International [Member] Wendy's International segment Cost of sales Cost of Product and Service Sold Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Accounts and notes receivable, net Accounts and Financing Receivable, after Allowance for Credit Loss, Current Number of Reportable Segments Disclosed by Definition Flag Number of Reportable Segments Disclosed by Definition Flag Number of Reportable Segments Disclosed by Definition Flag Wendy's U.S. Wendy's U.S. [Member] Wendy's U.S. segment New Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Accumulated Other Comprehensive Loss AOCI Attributable to Parent, Net of Tax [Roll Forward] Net income Net income Net income Net Income (Loss) Attributable to Parent Balance Sheet Location Location, Statement of Financial Position, Balance [Axis] Dispositions Proceeds from sales of restaurants Proceeds from Sale of Property, Plant, and Equipment Statement Statement [Table] Proceeds from stock option exercises Proceeds from Stock Options Exercised Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Anticipated Future Recognition of Deferred Franchise Fees Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Management Fee Income Management Fees [Member] Management Fees Contract Balances, assets and liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Sales-type and direct-financing leases, interest income Sales-type and Direct Financing Leases, Interest Income Contract balances Contract balances [Table] Contract balances [Table] Franchised Units Franchised Units [Member] Revenues: Revenues [Abstract] Advertising funds restricted assets Advertising funds restricted assets Aggregate amount of assets associated with our advertising and promotional programs.