Shareholders' Equity (Changes In The Company's Common Stock Issued and Outstanding) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Common stock, shares issued	(341,605,800)	(379,605,800)	(410,605,800)
Common stock, shares outstanding	310,256,100	340,573,700	364,935,000
Stock issued under stock plans	(1,524,700)	(4,433,100)	(7,435,800)
Stock repurchases	(4,600)	(12,700)	(27,000)
Deferred compensation plan distributions	160,900	68,800	104,800
Retirement of common stock	(8,000,000)	(38,000,000)	(31,000,000)
Common stock, shares issued	(333,605,800)	(341,605,800)	(379,605,800)
Common stock, shares outstanding	304,062,800	310,256,100	340,573,700
Balance	$ (4,323)	$ (4,250)
Other comprehensive income (loss)	(147)	(29)	$ 407
Accumulated Other Comprehensive Income (Loss) [Member]
Other comprehensive income (loss)	$ (147)	$ (29)	$ 407
Other [Member]
Stock repurchases	(7,874,300)	(34,806,800)	(31,874,900)
Treasury Stock, Deferred Compensation Plans [Member]
Common stock, shares issued	(1,170,800)	(1,179,200)	(1,229,200)
Stock issued under stock plans	(87,000)	(60,400)	(54,800)
Deferred compensation plan distributions	160,900	68,800	104,800
Common stock, shares issued	(1,096,900)	(1,170,800)	(1,179,200)
Treasury Stock, Other [Member]
Common stock, shares issued	(30,178,900)	(37,852,900)	(44,441,600)
Stock issued under stock plans	(1,611,700)	(4,493,500)	(7,490,600)
Stock repurchases	(4,600)	(12,700)	(27,000)
Common stock, shares issued	(28,446,100)	(30,178,900)	(37,852,900)
Treasury Stock, Other [Member] | Other [Member]
Stock repurchases	(7,874,300)	(34,806,800)	(31,874,900)
Treasury Stock [Member]
Common stock, shares issued	(31,349,700)	(39,032,100)	(45,670,800)
Stock issued under stock plans	(1,524,700)	(4,433,100)	(7,435,800)
Stock repurchases	(4,600)	(12,700)	(27,000)
Deferred compensation plan distributions	160,900	68,800	104,800
Retirement of common stock	(8,000,000)	(38,000,000)	(31,000,000)
Common stock, shares issued	(29,543,000)	(31,349,700)	(39,032,100)
Treasury Stock [Member] | Other [Member]
Stock repurchases	(7,874,300)	(34,806,800)	(31,874,900)