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Accounting for Leases - Additional Information (Detail)	12 Months Ended
	Feb. 01, 2015 Y
Accounting For Leases [Line Items]
Maximum optional renewal period under operating leases, years	20wsm_MaximumOptionalRenewalPeriodUnderOperatingLeasesYears
Minimum
Accounting For Leases [Line Items]
Operating lease term, years	3wsm_OperatingLeaseTermYear / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum
Accounting For Leases [Line Items]
Operating lease term, years	22wsm_OperatingLeaseTermYear / us-gaap_RangeAxis = us-gaap_MaximumMember

X

- Details

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

X

- Definition

Maximum optional renewal period under operating leases, years.

+ References

No definition available.

+ Details

Name:	wsm_MaximumOptionalRenewalPeriodUnderOperatingLeasesYears
Namespace Prefix:	wsm_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Original operating lease term.

+ References

No definition available.

+ Details

Name:	wsm_OperatingLeaseTermYear
Namespace Prefix:	wsm_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: