CAPITALIZATION (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended	9 Months Ended
	Oct. 28, 2016	Sep. 07, 2016	Oct. 28, 2016	Oct. 28, 2016	Jan. 29, 2016
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)	1,000,000		1,000,000	1,000,000
Preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01	$ 0.01
Preferred stock, shares outstanding (in shares)	0		0	0
Preferred stock, shares issued (in shares)	0		0	0
Par value (in dollars per share)	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Shares authorized (in shares)	2,143,000,000		2,143,000,000	2,143,000,000	700,000,000
Shares issued (in shares)	791,000,000		791,000,000	791,000,000	405,000,000
Treasury stock repurchases				$ 175
Shares outstanding (in shares)	787,000,000		787,000,000	787,000,000	405,000,000
DHI Group
Class of Stock [Line Items]
Par value (in dollars per share)	$ 0.01		$ 0.01	$ 0.01
DHI Group | Dell Stock Repurchase Program
Class of Stock [Line Items]
Treasury stock repurchases			$ 10
Class V Common Stock
Class of Stock [Line Items]
Par value (in dollars per share)		$ 0.01
Shares authorized (in shares)	343,000,000		343,000,000	343,000,000
Shares issued (in shares)	223,000,000		223,000,000	223,000,000
Shares authorized and unissued	120,000,000		120,000,000	120,000,000
Current economic interest (as a percent)	64.00%
Shares outstanding (in shares)	219,000,000		219,000,000	219,000,000
Class V Common Stock | Common Stock | EMC
Class of Stock [Line Items]
Current economic interest (as a percent)		65.00%
Class V Common Stock | Dell Stock Repurchase Program
Class of Stock [Line Items]
Stock repurchase program, authorized amount		$ 1,000
Shares repurchased (in shares)			4,000,000
Treasury stock repurchases			$ 165
Stock repurchase program, remaining authorized repurchase amount	$ 835		$ 835	$ 835
Class V Common Stock | DHI Group
Class of Stock [Line Items]
Current economic interest (as a percent)	36.00%
Class V Common Stock | DHI Group | EMC
Class of Stock [Line Items]
Current economic interest (as a percent)		35.00%
Class A Common Stock
Class of Stock [Line Items]
Shares authorized (in shares)	600,000,000		600,000,000	600,000,000	350,000,000
Shares issued (in shares)	409,000,000		409,000,000	409,000,000	307,000,000
Shares outstanding (in shares)	409,000,000		409,000,000	409,000,000	307,000,000
Class A Common Stock | VMware Stock Repurchase Program
Class of Stock [Line Items]
Stock repurchase program, authorized amount		$ 1,200
Treasury stock repurchases			$ 611