SEGMENT INFORMATION - Net revenue and property, plant and equipment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Aug. 02, 2019	Jul. 31, 2020	Aug. 02, 2019
Disaggregation of Revenue [Line Items]
Total net revenue	$ 22,733	$ 23,370	$ 44,630	$ 45,278
Operating segments
Disaggregation of Revenue [Line Items]
Total net revenue	22,318	23,020	43,746	44,589
Operating segments | Infrastructure Solutions Group
Disaggregation of Revenue [Line Items]
Total net revenue	8,207	8,621	15,776	16,823
Operating segments | Infrastructure Solutions Group | Servers and networking
Disaggregation of Revenue [Line Items]
Total net revenue	4,196	4,437	7,954	8,617
Operating segments | Infrastructure Solutions Group | Storage
Disaggregation of Revenue [Line Items]
Total net revenue	4,011	4,184	7,822	8,206
Operating segments | Client Solutions Group
Disaggregation of Revenue [Line Items]
Total net revenue	11,203	11,748	22,307	22,658
Operating segments | Client Solutions Group | Commercial
Disaggregation of Revenue [Line Items]
Total net revenue	8,039	9,077	16,673	17,384
Operating segments | Client Solutions Group | Consumer
Disaggregation of Revenue [Line Items]
Total net revenue	3,164	2,671	5,634	5,274
Operating segments | VMware
Disaggregation of Revenue [Line Items]
Total net revenue	$ 2,908	$ 2,651	$ 5,663	$ 5,108