Consolidated Balance Sheets (Parenthetical) - $ / shares	Jul. 31, 2021	Aug. 01, 2020
Class A common stock
Common stock, par value (in dollars per share)	$ 0.00002	$ 0.00002
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares issued (in shares)	76,780,570	58,440,930
Common stock, shares outstanding (in shares)	76,780,570	58,440,930
Class B common stock
Common stock, par value (in dollars per share)	$ 0.00002	$ 0.00002
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	31,175,418	45,314,577
Common stock, shares outstanding (in shares)	31,175,418	45,314,577