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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 28, 2019 USD ($)	Dec. 29, 2018 USD ($)	Dec. 30, 2017 USD ($)
Accounting Policies [Line Items]
Weeks in fiscal year	52	52	52
Advertising expense	$ 119.4	$ 120.8	$ 107.1
Prepaid advertising	$ 3.7	$ 1.5
Minimum [Member] | Building [Member]
Accounting Policies [Line Items]
Depreciable life	14 years
Minimum [Member] | Leasehold Improvements [Member]
Accounting Policies [Line Items]
Depreciable life	5 years
Minimum [Member] | Furniture Fixture Equipment [Member]
Accounting Policies [Line Items]
Depreciable life	3 years
Minimum [Member] | Software [Member]
Accounting Policies [Line Items]
Depreciable life	3 years
Maximum [Member] | Building [Member]
Accounting Policies [Line Items]
Depreciable life	20 years
Maximum [Member] | Leasehold Improvements [Member]
Accounting Policies [Line Items]
Depreciable life	15 years
Maximum [Member] | Furniture Fixture Equipment [Member]
Accounting Policies [Line Items]
Depreciable life	10 years
Maximum [Member] | Software [Member]
Accounting Policies [Line Items]
Depreciable life	5 years

X

- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of consideration paid in advance for advertising that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (g)(6)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=84159346&loc=d3e8275-108329

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6787-107765

+ Details

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

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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

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- Definition

Accounting Policies [Line Items]

+ References

No definition available.

+ Details

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Namespace Prefix:	www_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of full weeks in the fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	www_
Data Type:	xbrli:integerItemType
Balance Type:	na
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X

- Details

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X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
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X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=www_FurnitureFixtureEquipmentMember
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X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
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