NON-CONTROLLING INTERESTS - Additional Information (Narrative) (Details) - USD ($)	Oct. 30, 2020	Jul. 31, 2020	Jan. 31, 2020	Nov. 01, 2019	Aug. 02, 2019	Feb. 01, 2019
Noncontrolling Interest [Line Items]
Non-controlling interests	$ 5,939,000,000	$ 4,558,000,000	$ 3,155,000,000	$ 3,877,000,000	$ 3,095,000,000	$ (942,000,000)
Non-controlling interests
Noncontrolling Interest [Line Items]
Non-controlling interests	$ 5,056,000,000	$ 4,977,000,000	$ 4,729,000,000	$ 5,681,000,000	$ 5,544,000,000	$ 4,823,000,000
VMware, Inc.
Noncontrolling Interest [Line Items]
Outstanding equity interest held	80.40%		80.90%
VMware, Inc. | Non-controlling interests
Noncontrolling Interest [Line Items]
Non-controlling interests	$ 5,000,000,000.0		$ 4,600,000,000
Pivotal | Non-controlling interests
Noncontrolling Interest [Line Items]
Non-controlling interests	$ 0		$ 0
SecureWorks
Noncontrolling Interest [Line Items]
Outstanding equity interest held	85.90%		86.80%
Outstanding equity interest, including RSAs	85.10%		86.20%
SecureWorks | Non-controlling interests
Noncontrolling Interest [Line Items]
Non-controlling interests	$ 94,000,000		$ 88,000,000