Deferred Revenue and Commissions - Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 02, 2020	Jul. 31, 2019	Aug. 02, 2020	Jul. 31, 2019
Contract Liability
Additions	$ 60,296	$ 48,310	$ 30,534	$ 30,074
Recognition of deferred revenue	(54,813)	(44,715)	(28,210)	(24,763)
Product Revenue and Support Subscription Revenue
Contract Liability
Beginning balance	697,288	535,920	706,060	564,230
Additions	287,169	258,441	155,435	140,548
Recognition of deferred revenue	(259,706)	(187,098)	(136,744)	(97,515)
Ending balance	$ 724,751	$ 607,263	$ 724,751	$ 607,263