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Summary of Activity in Sales Returns Reserve (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2016 | Feb. 01, 2015 | Feb. 02, 2014
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Balance at beginning of year | [1] | $ 14,782 | $ 15,954 | $ 14,397
Provision for sales returns | [1] | 321,421 | 311,911 | 293,929
Actual sales returns | [1] | (317,090) | (313,083) | (292,372)
Balance at end of year | [1] | $ 19,113 | $ 14,782 | $ 15,954
[1] | Amounts are shown net of cost of goods sold.

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- Definition Reserve for estimated product returns net of cost of goods sold + References No definition available. + Details
Name: | wsm_ReserveForEstimatedProductReturnsNetOfCostOfGoodsSold
Namespace Prefix: | wsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition For each income statement presented, the amount of estimated sales returns net of cost of goods sold. + References No definition available. + Details
Name: | wsm_RevenueRecognitionSalesReturnsReserveForSalesReturnsNetOfCostOfGoodsSold
Namespace Prefix: | wsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The aggregate refunds recognized during an accounting period due to goods returned by customers (other than under warranty provisions) net of cost of goods sold. Returns are a deduction from gross revenue in arriving at net revenue. + References No definition available. + Details
Name: | wsm_SalesReturnsGoodsNetOfCostOfGoodsSold
Namespace Prefix: | wsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Summary Of Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | wsm_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | wsm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration