Accounts Receivable (Aging And Delinquency Status Of Credit Card Receivables Held For Sale And Held For Investment) (Details) - USD ($) $ in Millions	Aug. 01, 2015	Jan. 31, 2015	Aug. 02, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit card receivables	$ 120	$ 2,284	$ 2,420
Credit card receivables	$ 2,511
Credit card receivables, % of total	100.00%	100.00%	100.00%
Receivables not accruing finance charges	$ 10	$ 13	$ 11
Receivables 90 days or more delinquent and still accruing finance charges	12	13	7
Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit card receivables		$ 2,134	$ 2,301
Credit card receivables	$ 2,377
Credit card receivables, % of total	94.70%	93.40%	95.10%
1 - 29 days delinquent [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit card receivables		$ 103	$ 82
Credit card receivables	$ 91
Credit card receivables, % of total	3.60%	4.50%	3.40%
30 - 59 days delinquent [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit card receivables		$ 16	$ 15
Credit card receivables	$ 15
Credit card receivables, % of total	0.60%	0.70%	0.60%
60 - 89 days delinquent [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit card receivables		$ 10	$ 9
Credit card receivables	$ 10
Credit card receivables, % of total	0.40%	0.50%	0.40%
90 days or more delinquent [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit card receivables		$ 21	$ 13
Credit card receivables	$ 18
Credit card receivables, % of total	0.70%	0.90%	0.50%
Total 30 days or more delinquent [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit card receivables		$ 47	$ 37
Credit card receivables	$ 43
Credit card receivables, % of total	1.70%	2.10%	1.50%