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Restructuring Activities Restructuring Activities (Impairment Fair Value) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Dec. 29, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Restructuring costs $ 26.0us-gaap_OtherRestructuringCosts $ 0.7us-gaap_OtherRestructuringCosts $ 0us-gaap_OtherRestructuringCosts
Property, plant and equipment, net 136.8us-gaap_PropertyPlantAndEquipmentNet 151.9us-gaap_PropertyPlantAndEquipmentNet  
Consumer Direct Operations [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Restructuring costs 21.2us-gaap_OtherRestructuringCosts
/ us-gaap_RestructuringPlanAxis
= www_ConsumerDirectOperationsMember
   
Consumer Direct Operations [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property, plant and equipment, net 0.6us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RestructuringPlanAxis
= www_ConsumerDirectOperationsMember
   
Impairment of property and equipment [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Restructuring costs   0.7us-gaap_OtherRestructuringCosts
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_PropertyPlantAndEquipmentMember
 
Impairment of property and equipment [Member] | Consumer Direct Operations [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Restructuring costs $ 5.5us-gaap_OtherRestructuringCosts
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_PropertyPlantAndEquipmentMember
/ us-gaap_RestructuringPlanAxis
= www_ConsumerDirectOperationsMember