BUSINESS COMBINATIONS - Proforma (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Feb. 03, 2017	Oct. 28, 2016	Jul. 29, 2016	Apr. 29, 2016	Jan. 29, 2016	Oct. 30, 2015	Jul. 31, 2015	May 01, 2015	Feb. 03, 2017	Jan. 29, 2016	Jan. 30, 2015
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Inventories, net	$ 2,538				$ 1,619				$ 2,538	$ 1,619
Net loss	$ (236)	$ (2,064)	$ 573	$ 55	(155)	$ (180)	$ (265)	$ (504)	(1,672)	(1,104)	$ (1,221)
EMC
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total net revenue									74,225	73,138
Net loss attributable to Dell Technologies Inc.									$ (3,200)	(6,013)
EMC | Fair value adjustment to inventory
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Inventories, net					$ 700					700
EMC | Accelerated stock-based compensation expense
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Net loss										$ 1,500