XML 25 R57.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Summary of Restricted Stock Unit Activity (Parenthetical) (Detail) | Feb. 01, 2015
--- | ---
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Market value on the last business day of the fiscal year | 78.25 wsm_MarketValueOnLastBusinessDayOfFiscalYear

X
- Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Market value on last business day of fiscal year. + References No definition available. + Details
Name: | wsm_MarketValueOnLastBusinessDayOfFiscalYear
Namespace Prefix: | wsm_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant