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Summary of Significant Accounting Policies Concentration of Risk (Details)
 12 Months Ended
Dec. 28, 2014
distributors
customers
stores
Concentration Risk [Line Items]  
Major Customers 0wen_NumberOfCustomersAccountingForMoreThan10OfRevenues
Number of Main In-line Distributors 1wen_NumberOfMainInLineDistributors
Number of Additional In-line Distributors 3wen_NumberOfAdditionalInLineDistributors
Number of States Where Restaurants are Located 50us-gaap_NumberOfStatesInWhichEntityOperates
Main In-line Distributor Risk [Member]  
Concentration Risk [Line Items]  
Concentration Risk, Percentage 57.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= wen_MainInLineDistributorRiskMember
Additional In-line Distributor Risk [Member]  
Concentration Risk [Line Items]  
Concentration Risk, Percentage 36.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= wen_AdditionalInlineDistributorRiskMember
Geographic Concentration Risk [Member]  
Concentration Risk [Line Items]  
Concentration Risk, Percentage 10.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_GeographicConcentrationRiskMember
Foreign Countries [Member]  
Concentration Risk [Line Items]  
Number of Countries Entity Operates (Including Canada) 28us-gaap_NumberOfCountriesInWhichEntityOperates
/ us-gaap_StatementGeographicalAxis
= wen_ForeignCountriesMember