CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY - Reconciliation of Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 29, 2021	Jan. 31, 2020	Feb. 01, 2019
Condensed Financial Statements, Captions [Line Items]
Parent - Total operating expense	$ (24,273)	$ (26,311)	$ (25,244)
Interest and other, net	(1,474)	(2,626)	(2,170)
Income tax expense (benefit)	165	(5,533)	(180)
Net income (loss) attributable to Dell Technologies Inc.	3,250	4,616	(2,310)
Comprehensive income (loss) attributable to Dell Technologies Inc.	3,645	4,374	(2,849)
Parent Company
Condensed Financial Statements, Captions [Line Items]
Equity in net income (loss) of subsidiaries attributable to Dell Technologies Inc.	3,267	4,643	(2,042)
Parent - Total operating expense	(16)	(21)	(273)
Interest and other, net	0	0	(20)
Income tax expense (benefit)	(1)	(6)	25
Parent - Loss before equity in net income of subsidiaries	(17)	(27)	(268)
Net income (loss) attributable to Dell Technologies Inc.	3,250	4,616	(2,310)
Other comprehensive income (loss) of subsidiaries attributable to Dell Technologies Inc.	395	(242)	(539)
Comprehensive income (loss) attributable to Dell Technologies Inc.	$ 3,645	$ 4,374	$ (2,849)