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Credit Card Receivables Transaction (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Mar. 31, 2013
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Accounts, Notes, Loans and Financing Receivable        
Profit-sharing included in segment SG&A   $ 641 $ 629 $ 555
Credit card receivables        
Accounts, Notes, Loans and Financing Receivable        
Gains on sales of credit card portfolio $ 391      
Consideration from sale of consumer credit card portfolio 5,700      
Transfers of financial assets accounted for as sale, initial fair value of assets obtained as proceeds $ 225