Equity Incentive Plans - Narrative (Details)	3 Months Ended
	May 02, 2021 USD ($) period plan shares	May 03, 2020 USD ($)
Share-based Payment Arrangement [Abstract]
Number of equity incentive plans | plan	2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans | plan	2
Equity awards expiration period (no later than)	10 years
Total stock-based compensation expense	$ 61,334,000	$ 58,694,000
2015 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan offering period	24 months
Number of purchase periods | period	4
Purchase period, term	6 months
Reset charges	$ 0	23,800,000
Total stock-based compensation expense	7,600,000	$ 5,600,000
Unrecognized stock-based compensation expense	$ 35,400,000
Compensation cost (in years)	1 year
2015 Employee Stock Purchase Plan | Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deductions percentage	30.00%
Share cap for ESPP at purchase date (in shares) | shares	3,000
Dollar cap per purchase period	$ 7,500
Calendar year gap for ESPP contribution amount	$ 25,000
Purchase price as percentage of fair market value of common stock	85.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	2 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years