Financial Services, Financing Receivables by Credit Quality Indicator (Details 4) (USD $) In Millions, unless otherwise specified	Nov. 02, 2012	Feb. 03, 2012
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	$ 4,303	$ 4,539
Revolving Loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	1,819	2,096
Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	2,484	2,443
Dell Preferred Account (DPA) | Owned since inception | Revolving Loans
Accounts, Notes, Loans and Financing Receivable
Best	184	220
Good	375	412
Mixed	751	814
Customer receivables, gross	1,310	1,446
Dell Preferred Account (DPA) | Purchased | Revolving Loans
Accounts, Notes, Loans and Financing Receivable
Best	19	28
Good	55	80
Mixed	148	229
Customer receivables, gross	222	337
Non-Commercial | Owned since inception | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	2	2
Good	24	14
Mixed	22	14
Customer receivables, gross	48	30
Non-Commercial | Purchased | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	2	4
Good	18	32
Mixed	17	31
Customer receivables, gross	37	67
Dell Business Credit (DBC) | Revolving Loans
Accounts, Notes, Loans and Financing Receivable
Best	97	111
Good	88	98
Mixed	102	104
Customer receivables, gross	287	313
Small Commercial | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	97	91
Good	66	74
Mixed	79	85
Customer receivables, gross	242	250
Medium & Large Commerical | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	1,370	1,504
Good	546	363
Mixed	241	229
Customer receivables, gross	$ 2,157	$ 2,096