NON-CONTROLLING INTERESTS - Effect of Changes in Ownership Interests of Less than Wholly Owned Subsidiaries (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2021	May 01, 2020
Noncontrolling Interest [Abstract]
Net income attributable to Dell Technologies Inc.	$ 887	$ 143
Transfers (to)/from the non-controlling interests:
Increase in Dell Technologies Inc. additional paid-in-capital for equity issuances and other equity activity	251
Decrease in Dell Technologies Inc. additional paid-in-capital for equity issuances and other equity activity	(249)
Net transfers to non-controlling interests	2
Change from net income attributable to Dell Technologies Inc. and transfers to the non-controlling interests	$ 889