Related Party Transactions - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 30, 2020	Nov. 01, 2019	Oct. 30, 2020	Nov. 01, 2019
Related Party Transaction [Line Items]
Charged under shared services agreement	$ 24,508,000	$ 25,078,000	$ 73,824,000	$ 73,862,000
Purchases of computer equipment from Dell			2,181,000	12,082,000
Revenues	141,641,000	141,332,000	421,298,000	410,779,000
Dell Inc.
Related Party Transaction [Line Items]
Performance bonds, outstanding	1,800,000		1,800,000
Dell Inc. | Principal Owner
Related Party Transaction [Line Items]
Charged under shared services agreement	1,000,000.0	3,500,000	3,000,000.0	7,600,000
Dell Inc. | Principal Owner | Contracts Not Yet Transferred
Related Party Transaction [Line Items]
Revenues	14,200,000	13,600,000	44,000,000.0	43,900,000
Dell Inc. | Principal Owner | Solutions Purchases
Related Party Transaction [Line Items]
Revenues	4,300,000	10,600,000	14,900,000	19,400,000
Dell Inc. | Chief Executive Officer
Related Party Transaction [Line Items]
Revenues	23,000	100,000	200,000	300,000
Dell and EMC | Principal Owner
Related Party Transaction [Line Items]
Purchases of computer equipment from Dell	100,000	200,000	600,000	2,800,000
EMC and VMware | Subsidiary of Common Parent
Related Party Transaction [Line Items]
Purchase of annual maintenance services	400,000	900,000	1,800,000	2,700,000
VMware | Subsidiary of Common Parent
Related Party Transaction [Line Items]
Revenues	100,000		300,000
Carbon Black Inc. | Subsidiary of Common Parent | Solutions Purchases
Related Party Transaction [Line Items]
Purchases of solutions from Carbon Black	1,300,000	500,000	4,400,000	500,000
RSA Security LLC and Pivotal Software, Inc. | Subsidiary of Common Parent
Related Party Transaction [Line Items]
Purchase of annual maintenance services	0	30,000	100,000	100,000
Revenues	$ 0	$ 11,000	$ 0	$ 49,000