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Impairment of Capitalized Commissions

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Number of Financial Institutions

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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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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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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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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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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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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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Feb. 02, 2020 USD ($) numberOfFinancialInstitutions numberOfRevenueSources	Jan. 31, 2019 USD ($)	Jan. 31, 2018 USD ($)
Concentration Risk [Line Items]
Number of financial institutions where deposits exceed federally insured limits \| numberOfFinancialInstitutions	3
Restricted cash	$ 15,287,000	$ 15,823,000	$ 14,763,000
Impairment of goodwill	0
Impairment of long-lived assets	$ 0	0	0
Useful life of deferred commissions related to subscription services revenue	6 years
Sales commission expenses	$ 142,500,000	118,400,000	102,900,000
Deferred commissions	$ 139,204,000	114,973,000	87,313,000
Expected commission (as a percent)	27.00%
Impairment of capitalized commissions	$ 0	0	0
Revenue pertaining to deferred revenue recognized in period	267,000,000.0	191,100,000
Contracted but not recognized revenue	$ 880,700,000
Performance obligation expected to be recognized as revenue in the next 12 months (percent)	42.00%
Number of revenue sources \| numberOfRevenueSources	2
Software development costs capitalized during the period	$ 0	0	0
Advertising expenses	$ 13,300,000	$ 10,700,000	$ 10,300,000
Evergreen Storage Subscription
Concentration Risk [Line Items]
Active subscription service period	3 years
Hardware
Concentration Risk [Line Items]
Standard product warranty period	3 years
Embedded Software
Concentration Risk [Line Items]
Standard product warranty period	90 days
Minimum \| Technology patents
Concentration Risk [Line Items]
Estimated useful life of intangible assets	5 years
Maximum \| Technology patents
Concentration Risk [Line Items]
Estimated useful life of intangible assets	7 years
Test equipment
Concentration Risk [Line Items]
Property and equipment, useful life	2 years
Computer equipment and software \| Minimum
Concentration Risk [Line Items]
Property and equipment, useful life	2 years
Computer equipment and software \| Maximum
Concentration Risk [Line Items]
Property and equipment, useful life	3 years
Furniture and fixtures
Concentration Risk [Line Items]
Property and equipment, useful life	7 years
Customer concentration risk \| Sales revenue net \| 1 Channel Partner
Concentration Risk [Line Items]
Concentration risk percentage		11.00%
Customer concentration risk \| Accounts receivable \| 1 Channel Partner
Concentration Risk [Line Items]
Concentration risk percentage		10.00%
Customer concentration risk \| Accounts receivable \| 1 Customer
Concentration Risk [Line Items]
Concentration risk percentage	12.00%	10.00%