Stockholders' Equity (Details) - $ / shares shares in Millions	3 Months Ended		6 Months Ended
	Aug. 04, 2019	Jul. 29, 2018	Aug. 04, 2019	Jul. 29, 2018
Common stock:
Balance at beginning of period	1,784	1,781	1,782	1,780
Shares issued under employee stock plans	1	1	3	2
Balance at end of period	1,785	1,782	1,785	1,782
Treasury stock:
Balance at beginning of period	(683)	(627)	(677)	(622)
Repurchases of common stock	(6)	(10)	(12)	(15)
Balance at end of period	(689)	(637)	(689)	(637)
Shares outstanding at end of period	(1,096)	(1,145)	(1,096)	(1,145)
Cash dividends per share	$ 1.36	$ 1.03	$ 2.72	$ 2.06