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Memphis-Based Distribution Facilities - Additional Information (Detail) (USD $) | 12 Months Ended
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Feb. 01, 2015 | Feb. 02, 2014 | Feb. 03, 2013
Variable Interest Entity [Line Items] |  |  |
Rent expense | $ 215,221,000 wsm_OperatingLeasesRentalExpense | $ 201,727,000 wsm_OperatingLeasesRentalExpense | $ 189,060,000 wsm_OperatingLeasesRentalExpense
Memphis-based distribution facilities obligation | 1,968,000 wsm_VariableInterestEntityConsolidatedCarryingAmountDebt | 3,753,000 wsm_VariableInterestEntityConsolidatedCarryingAmountDebt |
Partnership 1 |  |  |
Variable Interest Entity [Line Items] |  |  |
Rent expense | 28,000 wsm_OperatingLeasesRentalExpense / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = us-gaap_PartnershipMember | 618,000 wsm_OperatingLeasesRentalExpense / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = us-gaap_PartnershipMember | 618,000 wsm_OperatingLeasesRentalExpense / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = us-gaap_PartnershipMember
Lease expiration date | February 2014 |  |
Partnership 2 |  |  |
Variable Interest Entity [Line Items] |  |  |
Rent expense | 2,432,000 wsm_OperatingLeasesRentalExpense / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = wsm_PartnershipTwoMember | 2,448,000 wsm_OperatingLeasesRentalExpense / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = wsm_PartnershipTwoMember | 2,473,000 wsm_OperatingLeasesRentalExpense / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = wsm_PartnershipTwoMember
Lease expiration date | August 2015 |  |
Assets (primarily buildings) | 10,658,000 us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = wsm_PartnershipTwoMember |  |
Memphis-based distribution facilities obligation | 1,968,000 wsm_VariableInterestEntityConsolidatedCarryingAmountDebt / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = wsm_PartnershipTwoMember |  |
Other long-term liabilities | $ 8,690,000 wsm_VariableInterestEntityConsolidatedCarryingAmountOtherLongTermLiabilities / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = wsm_PartnershipTwoMember |  |

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- Definition The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685 + Details
Name: | us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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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
Name: | wsm_LeaseExpirationDates
Namespace Prefix: | wsm_
Data Type: | us-types:dateStringItemType
Balance Type: | na
Period Type: | duration

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- Definition Rental expense incurred under operating leases, excluding contingent rental expense. + References No definition available. + Details
Name: | wsm_OperatingLeasesRentalExpense
Namespace Prefix: | wsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The carrying amount of the consolidated Variable Interest Entity's debt included in the reporting entity's statement of financial position. + References No definition available. + Details
Name: | wsm_VariableInterestEntityConsolidatedCarryingAmountDebt
Namespace Prefix: | wsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The carrying amount of the consolidated Variable Interest Entity's other long-term liabilities included in the reporting entity's statement of financial position. + References No definition available. + Details
Name: | wsm_VariableInterestEntityConsolidatedCarryingAmountOtherLongTermLiabilities
Namespace Prefix: | wsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |