Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Feb. 03, 2018	Feb. 26, 2016	Jan. 31, 2015
Class of Stock [Line Items]
Preferred stock, shares authorized			125,000
Preferred stock, par value			$ 0.01
Preferred stock, shares issued			0
Common stock, shares authorized			1,000,000
Common stock, par value			$ 0.01
Common stock, shares issued	333,606	341,606	333,606		379,606
Common stock, shares outstanding	304,063	310,256	304,765		340,574
Stock Repurchased and Retired During Period, Shares	0	0
Stock Repurchase Program, Additional Authorized Amount				$ 1,500
Stock repurchase program authorized amount			$ 18,000
Stock repurchased during period, shares	7,874	34,807
Stock repurchased during period, value	$ 316	$ 2,000
Stock repurchase program remaining authorized repurchase amount			$ 1,716