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Revenue From Contracts With Customers Contract Balances (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 30, 2017
Revenue Recognition [Abstract]
Contract with Customer, Refund Liability	$ 12.8	$ 12.6
Customer Rebates Liability	10.2	10.4
Customer Markdowns Reserve	6.7	6.4
Sales Incentives Reserve	2.5	3.3
Customer Advances, Current	$ 7.5	$ 6.7

X

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130532-203044

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 55
-Paragraph 27
-URI http://asc.fasb.org/extlink&oid=108792157&loc=SL49130611-203046-203046

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Customer Markdowns Reserve

+ References

No definition available.

+ Details

Name:	www_CustomerMarkdownsReserve
Namespace Prefix:	www_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Customer Rebates Liability

+ References

No definition available.

+ Details

Name:	www_CustomerRebatesLiability
Namespace Prefix:	www_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Sales Incentives Reserve

+ References

No definition available.

+ Details

Name:	www_SalesIncentivesReserve
Namespace Prefix:	www_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant