BUSINESS COMBINATIONS - Proforma (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
Oct. 28, 2016	Oct. 30, 2015	Oct. 28, 2016	Oct. 30, 2015
Business Combinations [Abstract]
Total net revenue	$ 17,826	$ 18,068	$ 53,860	$ 53,709
Net loss attributable to Dell Technologies Inc.	$ (931)	$ (721)	$ (2,140)	$ (4,205)
Class V Common Stock
Class of Stock [Line Items]
Earnings (loss) per share attributable to Dell Technologies Inc - basic (in dollars per share)	$ 0.75	$ 0.60	$ 1.75	$ 1.45
Earnings (loss) per share attributable to Dell Technologies Inc - diluted (in dollars per share)	0.75	0.60	1.74	1.44
DHI Group
Class of Stock [Line Items]
Earnings (loss) per share attributable to Dell Technologies Inc - basic (in dollars per share)	(1.94)	(1.51)	(4.47)	(8.01)
Earnings (loss) per share attributable to Dell Technologies Inc - diluted (in dollars per share)	$ (1.94)	$ (1.51)	$ (4.47)	$ (8.01)

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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