Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 28, 2022	Jan. 29, 2021	Jan. 31, 2020
Net Income
Basic Earnings	$ 2,399,232	$ 2,655,050	$ 1,712,555
Diluted Earnings	$ 2,399,232	$ 2,655,050	$ 1,712,555
Shares
Shares outstanding, basic	234,261	248,171	256,553
Effect of dilutive share-based awards	1,551	1,905	1,500
Shares outstanding, diluted	235,812	250,076	258,053
Per Share Amount
Basic earnings per share (in dollars per share)	$ 10.24	$ 10.70	$ 6.68
Diluted earnings per share (in dollars per share)	$ 10.17	$ 10.62	$ 6.64
Share-based awards outstanding excluded from computation of diluted earnings per share	100	200	300