Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2021	Oct. 30, 2020	Oct. 29, 2021	Oct. 30, 2020
Net Income
Basic Earnings	$ 487,031	$ 574,260	$ 1,801,799	$ 2,012,307
Diluted Earnings	$ 487,031	$ 574,260	$ 1,801,799	$ 2,012,307
Shares
Shares outstanding, basic	232,491	247,131	235,321	249,731
Effect of dilutive share-based awards	1,535	1,932	1,590	1,896
Shares outstanding, diluted	234,026	249,063	236,911	251,627
Per Share Amount
Basic earnings per share (in dollars per share)	$ 2.09	$ 2.32	$ 7.66	$ 8.06
Diluted earnings per share (in dollars per share)	$ 2.08	$ 2.31	$ 7.61	$ 8.00
Share-based awards outstanding excluded from computation of diluted earnings per share	100	100	100	200