Equity Incentive Plans - Equity Incentive Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	May 03, 2020	Apr. 30, 2019	Feb. 02, 2020
Options Outstanding, Number of Shares
Beginning balance (in shares)	26,822,243
Options exercised (in shares)	(2,174,568)
Options forfeited/canceled (in shares)	(108,184)
Ending balance (in shares)	24,539,491		26,822,243
Vested and exercisable (in shares)	22,050,411
Options Outstanding, Weighted Average Exercise Price
Beginning balance (in dollars per share)	$ 8.97
Options exercised (in dollars per share)	4.32
Options forfeited/canceled (in dollars per share)	16.13
Ending balance (in dollars per share)	9.36		$ 8.97
Weighted Average Exercise Price, Vested and exercisable (in dollars per share)	$ 8.62
Weighted- Average Remaining Contractual Life
Weighted Average Remaining Contractual Life (in years)	3 years 9 months 18 days		3 years 10 months 24 days
Weighted Average Remaining Contractual Life, Vested and exercisable (in years)	4 years 2 months 12 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value	$ 127,583		$ 237,803
Aggregate Intrinsic Value, Vested and exercisable	$ 126,788
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price of stock (in dollars per share)	$ 13.37
Total stock-based compensation expense	$ 58,694	$ 62,157
Unrecognized compensation cost, stock options	$ 8,500
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
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 2,000	$ 5,500
Compensation cost (in years)	1 year 2 months 12 days
Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price of stock (in dollars per share)	$ 13.37