Deferred Revenue and Commissions - Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 01, 2020	Oct. 31, 2019	Nov. 01, 2020	Oct. 31, 2019
Contract Liability
Additions	$ 36,234	$ 34,071	$ 96,530	$ 82,381
Recognition of deferred revenue	(28,832)	(29,508)	(83,645)	(74,223)
Product Revenue and Support Subscription Revenue
Contract Liability
Beginning balance	724,751	607,263	697,288	535,920
Additions	180,285	142,164	467,454	400,605
Recognition of deferred revenue	(142,272)	(106,229)	(401,978)	(293,327)
Ending balance	$ 762,764	$ 643,198	$ 762,764	$ 643,198