SEGMENT INFORMATION - Net revenue and property, plant and equipment (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 31, 2020	Nov. 01, 2019	Aug. 02, 2019	May 03, 2019	Feb. 01, 2019	Nov. 02, 2018	Aug. 03, 2018	May 04, 2018	Jan. 31, 2020	Feb. 01, 2019	Feb. 02, 2018
Disaggregation of Revenue [Line Items]
Total net revenue	$ 24,032	$ 22,844	$ 23,370	$ 21,908	$ 23,841	$ 22,482	$ 22,942	$ 21,356	$ 92,154	$ 90,621	$ 79,040
Property, plant, and equipment, net	6,055				5,259				6,055	5,259
Infrastructure Solutions Group
Disaggregation of Revenue [Line Items]
Total net revenue											30,917
Infrastructure Solutions Group | Servers and networking
Disaggregation of Revenue [Line Items]
Total net revenue											15,533
Infrastructure Solutions Group | Storage
Disaggregation of Revenue [Line Items]
Total net revenue											15,384
Client Solutions Group
Disaggregation of Revenue [Line Items]
Total net revenue											39,218
Client Solutions Group | Commercial
Disaggregation of Revenue [Line Items]
Total net revenue											27,507
Client Solutions Group | Consumer
Disaggregation of Revenue [Line Items]
Total net revenue											11,711
VMware
Disaggregation of Revenue [Line Items]
Total net revenue											8,485
Operating segments
Disaggregation of Revenue [Line Items]
Total net revenue									90,712	89,657	78,620
Operating segments | Infrastructure Solutions Group
Disaggregation of Revenue [Line Items]
Total net revenue									33,969	36,720	30,917
Operating segments | Infrastructure Solutions Group | Servers and networking
Disaggregation of Revenue [Line Items]
Total net revenue									17,127	19,953
Operating segments | Infrastructure Solutions Group | Storage
Disaggregation of Revenue [Line Items]
Total net revenue									16,842	16,767
Operating segments | Client Solutions Group
Disaggregation of Revenue [Line Items]
Total net revenue									45,838	43,196	39,218
Operating segments | Client Solutions Group | Commercial
Disaggregation of Revenue [Line Items]
Total net revenue									34,277	30,893
Operating segments | Client Solutions Group | Consumer
Disaggregation of Revenue [Line Items]
Total net revenue									11,561	12,303
Operating segments | VMware
Disaggregation of Revenue [Line Items]
Total net revenue									10,905	9,741	8,485
United States
Disaggregation of Revenue [Line Items]
Total net revenue									43,829	42,803	38,528
Property, plant, and equipment, net	4,322				4,058				4,322	4,058
Foreign countries
Disaggregation of Revenue [Line Items]
Total net revenue									48,325	47,818	$ 40,512
Property, plant, and equipment, net	$ 1,733				$ 1,201				$ 1,733	$ 1,201