FAIR VALUE MEASUREMENTS AND INVESTMENTS - Carrying Value and Estimated Fair Value of Outstanding Debt (Details) - USD ($) $ in Billions	Aug. 02, 2019	Feb. 01, 2019
Carrying Value | Senior Secured Credit Facilities | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	$ 9.4	$ 12.5
Carrying Value | First Lien Notes | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	20.5	19.8
Carrying Value | Unsecured Notes and Debentures | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	1.2	1.8
Carrying Value | Senior Notes | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	3.2	3.1
Carrying Value | EMC Notes | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	3.0	3.0
Carrying Value | VMware Notes | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	4.0	4.0
Carrying Value | Margin Loan Facility | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	4.0	3.3
Fair Value | Senior Secured Credit Facilities | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	9.5	12.6
Fair Value | First Lien Notes | Secured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	22.8	21.0
Fair Value | Unsecured Notes and Debentures | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	1.4	1.9
Fair Value | Senior Notes | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	3.4	3.4
Fair Value | EMC Notes | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	3.0	2.9
Fair Value | VMware Notes | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	4.0	3.9
Fair Value | Margin Loan Facility | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt	$ 4.0	$ 3.4