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Earnings Per Share- Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Nov. 01, 2020	Nov. 03, 2019	Nov. 01, 2020	Nov. 03, 2019
Earnings Per Share [Line Items]
Anti-dilutive stock-based awards excluded from the computation of diluted earnings per share	229	2,000	19,295	28,000

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

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

X

- Definition

Earnings Per Share [Line Items]

+ References

No definition available.

+ Details

Name:	wsm_EarningsPerShareLineItems
Namespace Prefix:	wsm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration