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Business Acquisitions (Additional Information) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 0 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Dec. 29, 2012
Oct. 09, 2012
Business Acquisition [Line Items]        
Acquisition-related transaction and integration costs $ 15.2us-gaap_BusinessCombinationIntegrationRelatedCosts $ 41.5us-gaap_BusinessCombinationIntegrationRelatedCosts $ 32.5us-gaap_BusinessCombinationIntegrationRelatedCosts  
Business Combination Acquisition Related Transaction And Integration Costs Total   41.5www_BusinessCombinationAcquisitionRelatedTransactionAndIntegrationCostsTotal 42.2www_BusinessCombinationAcquisitionRelatedTransactionAndIntegrationCostsTotal  
Acquisition-related transaction and integration costs, Cost of goods sold 0www_BusinessCombinationIntegrationRelatedCostsCostsofGoodsSold 0www_BusinessCombinationIntegrationRelatedCostsCostsofGoodsSold 4.5www_BusinessCombinationIntegrationRelatedCostsCostsofGoodsSold  
Acquisition-related interest expense 0www_BusinessAcquisitionInterestExpense 0www_BusinessAcquisitionInterestExpense 5.2www_BusinessAcquisitionInterestExpense  
Net reduction to goodwill   (10.8)www_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInGoodwill    
Goodwill from the acquisition of PLG   408.8www_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedGoodwill 419.6www_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedGoodwill  
Value of inventory   203.5us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory 203.5us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory  
PLG [Member]        
Business Acquisition [Line Items]        
Business acquisition price paid in cash     1,249.5us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= www_PerformancePlusLifestyleGroupMember
88.8us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= www_PerformancePlusLifestyleGroupMember
Value of inventory     4.0us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= www_PerformancePlusLifestyleGroupMember
 
Fixed assets written up to estimated fair market value     18.8us-gaap_ServicingAssetAtFairValuePeriodIncreaseDecrease
/ us-gaap_BusinessAcquisitionAxis
= www_PerformancePlusLifestyleGroupMember
 
Compensation Expense [Member]        
Business Acquisition [Line Items]        
Acquisition-related transaction and integration costs 3.9us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_CompensationExpenseMember
26.2us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_CompensationExpenseMember
2.7us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_CompensationExpenseMember
 
Purchased Services [Member]        
Business Acquisition [Line Items]        
Acquisition-related transaction and integration costs 1.1us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_PurchasedServicesMember
10.6us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_PurchasedServicesMember
5.2us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_PurchasedServicesMember
 
Other Integration Costs [Member]        
Business Acquisition [Line Items]        
Acquisition-related transaction and integration costs 10.2us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_OtherIntegrationCostsMember
     
Amortization Expense [Member]        
Business Acquisition [Line Items]        
Acquisition-related transaction and integration costs   2.4us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_AmortizationExpenseMember
   
Professional and Legal Fees [Member]        
Business Acquisition [Line Items]        
Acquisition-related transaction and integration costs   2.3us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_ProfessionalandLegalFeesMember
14.9us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_ProfessionalandLegalFeesMember
 
Taxes Paid on Behalf of Seller [Member]        
Business Acquisition [Line Items]        
Acquisition-related transaction and integration costs     $ 9.7us-gaap_BusinessCombinationIntegrationRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= www_TaxesPaidonBehalfofSellerMember