DISCONTINUED OPERATIONS - Key financial results of the Services business (Details) - USD ($) $ in Millions	2 Months Ended	3 Months Ended		9 Months Ended
	Oct. 28, 2016	Oct. 28, 2016	Oct. 30, 2015	Oct. 28, 2016	Oct. 30, 2015	Jan. 29, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of income taxes		$ (438)	$ 84	$ 875	$ 51
Dell Services | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue		658	675	1,968	2,011
Cost of net revenue		523	521	1,555	1,611
Operating expenses		116	88	322	289
Income from discontinued operations before income taxes		19	66	91	111
Income tax provision (benefit)		(37)	(11)	(955)	35
Income from discontinued operations, net of income taxes		56	77	1,046	76
Deferred tax asset, basis difference for entities held for sale						$ 1,000
Dell Software Group | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue		326	318	968	961
Cost of net revenue		74	97	249	282
Operating expenses		233	234	721	695
Interest and other, net		(8)	(2)	(1)	(8)
Income from discontinued operations before income taxes		11	(15)	(3)	(24)
Income tax provision (benefit)		489	(22)	152	1
Income from discontinued operations, net of income taxes		$ (478)	$ 7	$ (155)	$ (25)
Dell EMC Enterprise Content Division | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue	$ 74
Cost of net revenue	28
Operating expenses	66
Income from discontinued operations before income taxes	(20)
Income tax provision (benefit)	(4)
Income from discontinued operations, net of income taxes	$ (16)