FAIR VALUE MEASUREMENTS - Carrying value and estimated fair value of outstanding debt (Details) - USD ($) $ in Millions	Oct. 28, 2016	Jan. 29, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	$ 47,284	$ 10,650
Term Loan Facilities | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	0	6,100
Fair Value	0	6,200
Senior Secured Credit Facilities | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	15,600	0
Fair Value	15,900	0
Senior First Lien Notes | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	0	1,400
Fair Value	0	1,500
First Lien Notes | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	19,600	0
Fair Value	21,700	0
Unsecured Notes and Debentures | Unsecured Notes and Debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	2,300	2,700
Fair Value	2,500	2,700
Senior Unsecured Notes | Unsecured Notes and Debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	3,100	0
Fair Value	3,500	0
EMC Notes | Unsecured Notes and Debentures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	5,500	0
Fair Value	5,300	0
Bridge Facilities | Bridge Facilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term debt	6,100	0
Fair Value	$ 6,200	$ 0