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Summary of Stock Option Activity (Parenthetical) (Detail)	6 Months Ended
	Aug. 02, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested percentage	100.00%

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

- Definition

Percent of share options (or share units) vested as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	wsm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedPercentage
Namespace Prefix:	wsm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration