Property plant and equipment weighted average useful life.

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Revenue related to gift card breakage.

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Significant Accounting Policies [Line Items]

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Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer, classified as current.

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Amount of right to recover product from customer on settling refund liability, classified as current.

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Amount of the cumulative effect on retained earnings net of related income tax effect.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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Summary of Significant Accounting Policies - Additional Information (Detail)		3 Months Ended		6 Months Ended
	Feb. 04, 2018 USD ($)	Aug. 04, 2018 USD ($)	Jul. 29, 2017 USD ($)	Aug. 04, 2018 USD ($) Segment	Jul. 29, 2017 USD ($)
Significant Accounting Policies [Line Items]
Number of reportable segments \| Segment				1
Short-term investments		$ 40,000,000	$ 0	$ 40,000,000	$ 0
Long-term investments			0		0
Weighted average remaining useful life, assets				8 years
Long-lived asset impairment charges		0	0	$ 0	0
Finite-lived impairment charges		0	0	0	0
Revenue related to gift card breakage		2,100,000	2,000,000	$ 4,600,000	4,500,000
Number of operating segments \| Segment				2
Prepaid Expenses and Other
Significant Accounting Policies [Line Items]
Right of return asset		5,400,000		$ 5,400,000
Other Liabilities and Accrued Expenses
Significant Accounting Policies [Line Items]
Sales return reserve liability		12,300,000	$ 4,900,000	$ 12,300,000	$ 4,900,000
Minimum
Significant Accounting Policies [Line Items]
Finite lived intangibles, useful life				15 years
Maximum
Significant Accounting Policies [Line Items]
Finite lived intangibles, useful life				25 years
Accounting Standards Update 2014-09
Significant Accounting Policies [Line Items]
Net increase to opening retained earnings due to cumulative impact of adoption	$ 200,000			$ 152,000
Non-cancellable Operating Leases
Significant Accounting Policies [Line Items]
Minimum lease commitments		$ 1,600,000,000		$ 1,600,000,000