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Leases - Additional Information (Detail) - Partnership - USD ($) | 12 Months Ended
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Jan. 31, 2021 | Feb. 02, 2020 | Feb. 03, 2019
Accounting For Leases [Line Items] |  |  |
Lease expiration date | Jul. 31, 2022 |  |
Rent expense | $ 1,493,000 | $ 1,765,000 | $ 1,689,000

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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121573735&loc=d3e41499-112717 + Details
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Period Type: | duration

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- Definition Accounting For Leases [Line Items] + References No definition available. + Details
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- Definition The date upon which a lease or a group of leases is set to expire. + References No definition available. + Details
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Namespace Prefix: | wsm_
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Balance Type: | na
Period Type: | duration

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- Details
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