Credit Card Receivable Transaction (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Oct. 01, 2015
Credit Card Receivable Transaction [Line Items]
Cash acquired for credit transaction			$ 2,200
Credit transaction and other, net (including transaction-related expenses from the third quarter)		$ 32
Beneficial interest asset, useful life (in years)	4 years
Deferred revenue, useful life (in years)	7 years
Investment in contract asset, useful life (in years)	7 years
Series 2011-1 Class A Notes, 2.28%, due October 2016 [Member]
Credit Card Receivable Transaction [Line Items]
Debt defeased as a condition of closing the credit card receivable transaction		$ 325