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Accounts Receivable (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale Of Accounts Receivable, Maximum Amount Under Agreement	$ 150.0
Sale Of Accounts Receivable Percent Paid At Sale	90.00%
Accounts Receivable, Reduction Due To Sale	$ 70.1	$ 81.1
Accounts Receivable Sold	558.3	614.9	$ 657.4
Discount fee charged by financial institution	$ 2.1	$ 1.7	$ 1.4

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Definition

Reflects the net positive or negative amount derived from subtracting from net proceeds of sale, the carrying amounts, net of allocated reserves, of accounts receivable transferred to a third party in a transaction that qualifies for sales treatment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64830801&loc=d3e107425-111719

+ Details

Name:	us-gaap_GainLossOnSaleOfAccountsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amounts of accounts receivable balance reduced as of the balance sheet date due to the sale of accounts receivable.

+ References

No definition available.

+ Details

Name:	www_AccountsReceivableReductionDueToSale
Namespace Prefix:	www_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount of accounts receivable sold at their stated amount.

+ References

No definition available.

+ Details

Name:	www_AccountsReceivableSold
Namespace Prefix:	www_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The maximum amount of accounts receivable to be sold under the agreement.

+ References

No definition available.

+ Details

Name:	www_SaleOfAccountsReceivableMaximumAmountUnderAgreement
Namespace Prefix:	www_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

For receivables sold uner the agreement, the percent of the stated amount paid in cash at time of sale.

+ References

No definition available.

+ Details

Name:	www_SaleOfAccountsReceivablePercentPaidAtSale
Namespace Prefix:	www_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant