FINANCIAL SERVICES - Additional Information (Narrative) (Details)		3 Months Ended
	Oct. 17, 2019 EUR (€)	May 01, 2020 USD ($)	May 03, 2019 USD ($)	Jan. 31, 2020 USD ($)	Mar. 20, 2019 USD ($)	Jun. 22, 2016 USD ($)	Jun. 01, 2016 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
New financing originations		$ 1,800,000,000	$ 1,700,000,000
Interest income on the sales-type lease receivables		65,000,000	64,000,000
Operating lease income		87,000,000	4,000,000
Debt outstanding		57,347,000,000		$ 52,665,000,000
Financing receivables sold		21,000,000	101,000,000
Variable Interest Entity, Primary Beneficiary
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivables transferred via securitization through SPEs		1,800,000,000	1,500,000,000
Debt outstanding		6,500,000,000		$ 5,900,000,000
Note payable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Aggregate principal amount		$ 181,000,000
Note payable | LIBOR
Accounts, Notes, Loans and Financing Receivable [Line Items]
Basis spread on variable rate		2.25%
Note payable | Mexico, Pesos | TIIE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Basis spread on variable rate		2.00%
Secured Debt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Aggregate principal amount					$ 4,500,000,000		$ 20,000,000,000.0
Secured Debt | Other | Canada
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total debt capacity		$ 269,000,000
Secured Debt | Other | Europe
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total debt capacity		657,000,000
Secured Debt | Other | Australia and New Zealand
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total debt capacity		228,000,000
Unsecured Debt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Aggregate principal amount						$ 3,250,000,000
Unsecured Debt | Dell Bank Bonds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate	0.625%
Aggregate principal amount | €	€ 500,000,000
Debt instrument, term	3 years
Assets Leased to Others
Accounts, Notes, Loans and Financing Receivable [Line Items]
Operating lease depreciation expense		$ 62,000,000	$ 3,000,000
Minimum | Secured Debt | Fixed-term securitization offerings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate		1.91%
Maximum | Secured Debt | Fixed-term securitization offerings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate		5.92%
Revolving
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repayment term (in years)		12 months
Fixed-term | Secured Debt | Asset-based financing and securitization facilities | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total debt capacity		$ 876,000,000
Fixed-term | Minimum | Commercial Borrower
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repayment term (in years)		2 years
Fixed-term | Minimum | Other Borrower
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repayment term (in years)		3 years
Fixed-term | Maximum | Commercial Borrower
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repayment term (in years)		4 years
Fixed-term | Maximum | Other Borrower
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repayment term (in years)		5 years
Finance Leases and Revolving Loan Portfolio Segments | Secured Debt | Asset-based financing and securitization facilities | U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total debt capacity		$ 4,000,000,000.0