XML 34 R34.htm IDEA: XBRL DOCUMENT
v3.19.2

Summary of Restricted Stock Unit Activity (Parenthetical) (Detail) - Restricted Stock Units (RSUs) [Member] | 6 Months Ended
--- | ---
Aug. 04, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Incremental shares released due to achievement of performance conditions | 954,327 | [1]
Achievement [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Incremental shares released due to achievement of performance conditions | 105,436 |
[1] | Excludes 105,436 incremental shares released due to achievement of performance conditions above target.

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | wsm_AchievementTypeAxis=wsm_AchievementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |