Financial Services, Financing Receivables by Credit Quality Indicator (Details 3) (USD $) In Millions, unless otherwise specified	Aug. 02, 2013	Feb. 01, 2013
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	$ 4,378	$ 4,369
Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	1,645	1,834
Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	2,733	2,535
Dell Preferred Account (DPA) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	1,357	1,539
Dell Business Credit (DBC) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	288	295
Consumer and Small Commercial | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	333	327
Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	2,400	2,208
Best | Dell Preferred Account (DPA) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	180	201
Best | Dell Business Credit (DBC) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	94	99
Best | Consumer and Small Commercial | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	89	90
Best | Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	1,437	1,355
Good | Dell Preferred Account (DPA) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	391	435
Good | Dell Business Credit (DBC) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	81	88
Good | Consumer and Small Commercial | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	124	117
Good | Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	634	582
Mixed | Dell Preferred Account (DPA) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	786	903
Mixed | Dell Business Credit (DBC) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	113	108
Mixed | Consumer and Small Commercial | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	120	120
Mixed | Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	$ 329	$ 271