Schedule Of Stock Options Outstanding Expected To Vest And Stock Options Outstanding Exercisable (Detail) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Feb. 03, 2018 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options outstanding expected to vest | shares	8,014
Shares, Options exercisable | shares	18,976
Shares, Total outstanding options vested and expected to vest | shares	26,990
Aggregate Intrinsic Value, Options outstanding expected to vest | $	$ 38,245
Aggregate Intrinsic Value, Options exercisable | $	605,624
Aggregate Intrinsic Value, Total outstanding options vested and expected to vest | $	$ 643,869
Weighted Average Remaining Contract Life, Options outstanding expected to vest, years	9 years
Weighted Average Remaining Contract Life, Options exercisable, years	5 years
Weighted Average Remaining Contract Life, Total outstanding options vested and expected to vest, years	6 years 2 months 12 days
WAEP, Options outstanding expected to vest | $ / shares	$ 73.70
WAEP, Options exercisable | $ / shares	46.56
WAEP, Total outstanding options vested and expected to vest | $ / shares	$ 54.61