FINANCIAL SERVICES - Aging Customer Financing Receivables, Gross, Including Accrued Interest (Details) - USD ($) $ in Millions	Feb. 03, 2017	Jan. 29, 2016
Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 4,884	$ 4,460
Total customer receivables, gross	5,539	4,810
Revolving | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total customer receivables, gross	1,009	1,173
Revolving | Dell Preferred Account (DPA)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total customer receivables, gross	808	947
Revolving | Dell Preferred Account (DPA) | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	715	812
Total customer receivables, gross	808	947
Revolving | Dell Business Credit (DBC)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total customer receivables, gross	201	226
Revolving | Dell Business Credit (DBC) | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	175	202
Total customer receivables, gross	201	226
Fixed-term | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total customer receivables, gross	4,530	3,637
Fixed-term | Consumer and Small Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total customer receivables, gross	376	329
Fixed-term | Consumer and Small Commercial | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	340	315
Total customer receivables, gross	376	329
Fixed-term | Medium and Large Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total customer receivables, gross	4,154	3,308
Fixed-term | Medium and Large Commercial | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,654	3,131
Total customer receivables, gross	4,154	3,308
Past Due 1 — 90 Days | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	594	303
Past Due 1 — 90 Days | Revolving | Dell Preferred Account (DPA) | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	66	99
Past Due 1 — 90 Days | Revolving | Dell Business Credit (DBC) | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	22	20
Past Due 1 — 90 Days | Fixed-term | Consumer and Small Commercial | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	34	13
Past Due 1 — 90 Days | Fixed-term | Medium and Large Commercial | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	472	171
Past Due 90 Days | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	61	47
Past Due 90 Days | Revolving | Dell Preferred Account (DPA) | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	27	36
Past Due 90 Days | Revolving | Dell Business Credit (DBC) | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	4	4
Past Due 90 Days | Fixed-term | Consumer and Small Commercial | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2	1
Past Due 90 Days | Fixed-term | Medium and Large Commercial | Customer receivables
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	$ 28	$ 6