Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Aug. 02, 2019	Aug. 03, 2018	Aug. 02, 2019	Aug. 03, 2018
Net Income
Basic Earnings	$ 426,555	$ 407,237	$ 811,568	$ 772,089
Diluted Earnings	$ 426,555	$ 407,237	$ 811,568	$ 772,089
Shares
Shares outstanding, basic	257,793	266,457	258,407	267,362
Effect of dilutive share-based awards	1,309	769	1,276	818
Shares outstanding, diluted	259,102	267,226	259,683	268,180
Per Share Amount
Basic earnings per share (in dollars per share)	$ 1.65	$ 1.53	$ 3.14	$ 2.89
Diluted earnings per share (in dollars per share)	$ 1.65	$ 1.52	$ 3.13	$ 2.88
Share-based awards outstanding excluded from computation of diluted earnings per share	600	900	600	900

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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