NON-CONTROLLING INTEREST - Noncontrolling interest roll forward (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 29, 2016	Jul. 31, 2015	Jul. 29, 2016	Jul. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period			$ 1,466
Net income (loss)			627
Issuance of common stock of subsidiary upon public offering, net of offering costs			124
Foreign currency translation adjustments	$ (37)	$ (14)	42	$ (47)
Cash flow hedges, net change	85	$ (22)	(26)	$ (212)
Stock-based compensation expense			33
Revaluation of redeemable shares			(73)
Treasury stock repurchases and other			(2)
Balance at end of period	2,191		2,191
Dell Technologies Stockholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period			1,466
Net income (loss)			628
Issuance of common stock of subsidiary upon public offering, net of offering costs			0
Foreign currency translation adjustments			42
Cash flow hedges, net change			(26)
Stock-based compensation expense			30
Revaluation of redeemable shares			(73)
Treasury stock repurchases and other			(2)
Balance at end of period	2,065		2,065
Non-Controlling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period			0
Net income (loss)			(1)
Issuance of common stock of subsidiary upon public offering, net of offering costs			124
Foreign currency translation adjustments			0
Cash flow hedges, net change			0
Stock-based compensation expense			3
Revaluation of redeemable shares			0
Treasury stock repurchases and other			0
Balance at end of period	$ 126		$ 126