SEGMENT INFORMATION - Reconciliation of net revenue by reportable segments to consolidated net revenue (Details) - USD ($) $ in Millions	3 Months Ended
	May 01, 2020	May 03, 2019
Segment Reporting Information [Line Items]
Total net revenue	$ 21,897	$ 21,908
Consolidated operating income (loss)	702	550
Amortization of intangibles	(855)	(1,200)
Operating segments
Segment Reporting Information [Line Items]
Total net revenue	21,428	21,569
Consolidated operating income (loss)	2,097	2,231
Operating segments | Infrastructure Solutions Group
Segment Reporting Information [Line Items]
Total net revenue	7,569	8,202
Consolidated operating income (loss)	732	843
Operating segments | Client Solutions Group
Segment Reporting Information [Line Items]
Total net revenue	11,104	10,910
Consolidated operating income (loss)	592	793
Operating segments | VMware
Segment Reporting Information [Line Items]
Total net revenue	2,755	2,457
Consolidated operating income (loss)	773	595
Operating segments | Other businesses
Segment Reporting Information [Line Items]
Total net revenue	517	421
Consolidated operating income (loss)	65	(34)
Unallocated transactions
Segment Reporting Information [Line Items]
Consolidated operating income (loss)	(1)	(1)
Other corporate expenses	(95)	(23)
Reconciling items
Segment Reporting Information [Line Items]
Total net revenue	(48)	(82)
Impact of purchase accounting	(63)	(101)
Amortization of intangibles	(855)	(1,217)
Transaction-related expenses	(76)	(42)
Stock-based compensation expense	$ (370)	$ (263)