Taxes (Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Taxes Payable [Abstract]
Current federal income tax expense (benefit)	$ 367	$ 433	$ 536
Deferred federal income tax expense (benefit)	(452)	(125)	0
Federal income tax expense (benefit), total	(85)	308	536
Current state and local income tax expense (benefit)	16	37	72
Deferred state and local income tax expense (benefit)	40	(4)	0
State and local income tax expense (benefit), total	56	33	72
Current income tax expense (benefit), total	383	470	608
Deferred income tax expense, total	(412)	(129)	0
Income tax expense (benefit), total	$ (29)	$ 341	$ 608