SEGMENT INFORMATION - Reconciliation of net revenue by reportable segments to consolidated net revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 28, 2016	Oct. 30, 2015	Oct. 28, 2016	Oct. 30, 2015
Segment Reporting Information [Line Items]
Consolidated net revenue:	$ 16,247	$ 12,674	$ 41,568	$ 38,232
Consolidated operating loss	(1,512)	(78)	(1,584)	(488)
Amortization of intangibles	(1,164)	(492)	(2,146)	(1,478)
Operating Segments
Segment Reporting Information [Line Items]
Consolidated net revenue:	16,465	12,647	41,648	38,222
Consolidated operating loss	2,079	641	3,440	1,702
Operating Segments | Client Solutions Group
Segment Reporting Information [Line Items]
Consolidated net revenue:	9,187	8,936	26,978	27,040
Consolidated operating loss	634	384	1,503	926
Operating Segments | Infrastructure Solutions Group
Segment Reporting Information [Line Items]
Consolidated net revenue:	5,989	3,711	13,381	11,182
Consolidated operating loss	897	257	1,389	776
Operating Segments | VMware
Segment Reporting Information [Line Items]
Consolidated net revenue:	1,289	0	1,289	0
Consolidated operating loss	548	0	548	0
Operating Segments | Other Businesses
Segment Reporting Information [Line Items]
Consolidated net revenue:	312	104	530	279
Consolidated operating loss	(13)	(15)	(48)	(50)
Other
Segment Reporting Information [Line Items]
Consolidated net revenue:	0	30	63	101
Consolidated operating loss	91	19	122	82
Amortization of intangibles	(1,164)	(492)	(2,146)	(1,478)
Transaction-related expenses	(1,200)	(27)	(1,329)	(67)
Impact of purchase accounting
Segment Reporting Information [Line Items]
Consolidated net revenue:	(530)	(107)	(673)	(370)
Consolidated operating loss	(850)	(149)	(1,054)	(475)
Other Businesses
Segment Reporting Information [Line Items]
Consolidated operating loss	$ (273)	$ (17)	$ (325)	$ (38)