Earnings per share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Nov. 02, 2018	Nov. 03, 2017	Nov. 02, 2018	Nov. 03, 2017
Net Income
Basic Earnings	$ 334,142	$ 252,533	$ 1,106,231	$ 826,805
Diluted Earnings	$ 334,142	$ 252,533	$ 1,106,231	$ 826,805
Shares
Shares outstanding, basic	264,490	272,319	266,404	273,567
Effect of dilutive share-based awards	1,032	562	890	509
Shares outstanding, diluted	265,522	272,881	267,294	274,076
Per Share Amount
Basic earnings per share (in dollars per share)	$ 1.26	$ 0.93	$ 4.15	$ 3.02
Diluted earnings per share (in dollars per share)	$ 1.26	$ 0.93	$ 4.14	$ 3.02
Share-based awards outstanding excluded from computation of diluted earnings per share	700	2,500	800	2,600

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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