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Accounts Receivable (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Accounts Receivables [Abstract]
Sale of accounts receivable, maximum amount under agreement	$ 150.0		$ 150.0
Sale of accounts receivable percent paid at sale	90.00%		90.00%
Accounts receivable sold	$ 111.6	$ 148.4	$ 224.2	$ 298.0
Fee charged on sale of accounts receivable	0.6	0.5	1.1	1.0
Accounts receivable, reduction due to sale	$ 58.6	$ 82.2	$ 58.6	$ 82.2	$ 70.1

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109247956&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

Accounts Receivables [Abstract]

+ References

No definition available.

+ Details

Name:	www_AccountsReceivablesAbstract
Namespace Prefix:	www_
Data Type:	xbrli:stringItemType
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