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Business Segments (Assets and Goodwill by Segment) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 28, 2015
Jan. 03, 2015
Mar. 22, 2014
Dec. 28, 2013
Segment Reporting Information [Line Items]        
Total assets $ 2,440.5us-gaap_Assets $ 2,504.5us-gaap_Assets $ 2,679.4us-gaap_Assets  
Goodwill 434.1us-gaap_Goodwill 438.8us-gaap_Goodwill 442.3us-gaap_Goodwill 445.3us-gaap_Goodwill
Performance Group [Member]        
Segment Reporting Information [Line Items]        
Total assets 533.1us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_PerformanceGroupMember
485.8us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_PerformanceGroupMember
554.9us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_PerformanceGroupMember
 
Goodwill 92.4us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_PerformanceGroupMember
92.5us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_PerformanceGroupMember
92.8us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_PerformanceGroupMember
 
Lifestyle Group [Member]        
Segment Reporting Information [Line Items]        
Total assets 1,406.6us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_LifestyleGroupMember
1,378.8us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_LifestyleGroupMember
1,482.6us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_LifestyleGroupMember
 
Goodwill 320.0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_LifestyleGroupMember
323.8us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_LifestyleGroupMember
326.1us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_LifestyleGroupMember
 
Heritage Group [Member]        
Segment Reporting Information [Line Items]        
Total assets 230.7us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_HeritageGroupMember
246.4us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_HeritageGroupMember
219.9us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= www_HeritageGroupMember
 
Goodwill 21.7us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_HeritageGroupMember
22.5us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_HeritageGroupMember
23.4us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= www_HeritageGroupMember
 
Other [Member]        
Segment Reporting Information [Line Items]        
Total assets 57.1us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
52.1us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
60.4us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
 
Corporate [Member]        
Segment Reporting Information [Line Items]        
Total assets $ 213.0us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
$ 341.4us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
$ 361.6us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember