Income Taxes (Components Of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Current income taxes:
Federal	$ 290	$ 202	$ 397
State and local	54	32	61
Foreign	1	0	0
Total current income tax expense	345	234	458
Deferred income taxes:
Federal	(17)	123	9
State and local	(5)	23	2
Foreign	7	(4)	(4)
Total deferred income tax (benefit) expense	(15)	142	7
Total income tax expense	$ 330	$ 376	$ 465