Financial Services, Financing Receivables by Credit Quality Indicator (Details 4) (USD $) In Millions, unless otherwise specified	Feb. 03, 2012	Jan. 28, 2011
Accounts, Notes, Loans and Financing Receivable
Customer receivables, gross	$ 4,539	$ 4,388
Small and Medium Business | Revolving Loans
Accounts, Notes, Loans and Financing Receivable
Best	111	124
Good	98	109
Mixed	104	90
Customer receivables, gross	313	323
Small and Medium Business | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	43	55
Good	208	122
Mixed	311	208
Customer receivables, gross	562	385
Large Enterprise | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	1,000	806
Good	199	166
Mixed	135	159
Customer receivables, gross	1,334	1,131
Consumer | Owned since inception | Revolving Loans
Accounts, Notes, Loans and Financing Receivable
Best	220	251
Good	412	415
Mixed	814	837
Customer receivables, gross	1,446	1,503
Consumer | Owned since inception | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	2	0
Good	14	0
Mixed	14	0
Customer receivables, gross	30	0
Consumer | Purchased | Revolving Loans
Accounts, Notes, Loans and Financing Receivable
Best	28	50
Good	80	127
Mixed	229	393
Customer receivables, gross	337	570
Consumer | Purchased | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	4	0
Good	32	0
Mixed	31	0
Customer receivables, gross	67	0
Public | Fixed-term loans
Accounts, Notes, Loans and Financing Receivable
Best	400	438
Good	40	30
Mixed	10	8
Customer receivables, gross	$ 450	$ 476