Financial Services, Financing Receivables by Credit Quality Indicator (Details 3) (USD $) In Millions, unless otherwise specified	May 03, 2013	Feb. 01, 2013
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	$ 4,171	$ 4,369
Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	1,701	1,834
Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	2,470	2,535
Dell Preferred Account (DPA) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	1,413	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	320	327
Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	2,150	2,208
Best | Dell Preferred Account (DPA) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	183	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	87	90
Best | Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	1,310	1,355
Good | Dell Preferred Account (DPA) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	397	435
Good | Dell Business Credit (DBC) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	84	88
Good | Consumer and Small Commercial | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	119	117
Good | Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	560	582
Mixed | Dell Preferred Account (DPA) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	833	903
Mixed | Dell Business Credit (DBC) | Revolving loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	110	108
Mixed | Consumer and Small Commercial | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	114	120
Mixed | Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	$ 280	$ 271