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Segment Information (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 02, 2015	Aug. 03, 2014	Aug. 02, 2015	Aug. 03, 2014
Segment Reporting Information [Line Items]
Net revenues related to foreign operations	$ 66.9	$ 55.4	$ 121.7	$ 106.5
Long-term assets related to foreign operations	$ 60.0	$ 62.2	$ 60.0	$ 62.2

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.

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No definition available.

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Data Type:	xbrli:stringItemType
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- Definition

Amount of long-lived assets located in foreign countries in total in which the entity holds assets.

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No definition available.

+ Details

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Namespace Prefix:	wsm_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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- Definition

Revenues from external customers attributed to all foreign countries in total from which the entity derives revenues.

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No definition available.

+ Details

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