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Earnings Per Share- Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Jul. 30, 2017	Jul. 31, 2016	Jul. 30, 2017	Jul. 31, 2016
Earnings Per Share [Line Items]
Anti-dilutive stock-based awards excluded from the computation of diluted earnings per share	1,638,306	909,000	1,048,547	627,000

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/presentationRef
-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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Balance Type:	na
Period Type:	duration

X

- Definition

Earnings Per Share [Line Items]

+ References

No definition available.

+ Details

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