Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2021	Jul. 31, 2020	Jul. 30, 2021	Jul. 31, 2020
Net Income
Basic Earnings	$ 637,019	$ 787,601	$ 1,314,768	$ 1,438,047
Diluted Earnings	$ 637,019	$ 787,601	$ 1,314,768	$ 1,438,047
Shares
Shares outstanding, basic	234,924	250,281	236,736	251,031
Effect of dilutive share-based awards	1,482	1,909	1,618	1,877
Shares outstanding, diluted	236,406	252,190	238,354	252,908
Per Share Amount
Basic earnings per share (in dollars per share)	$ 2.71	$ 3.15	$ 5.55	$ 5.73
Diluted earnings per share (in dollars per share)	$ 2.69	$ 3.12	$ 5.52	$ 5.69
Share-based awards outstanding excluded from computation of diluted earnings per share	100	100	100	300