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Net Loss Per Share Attributable to Common Stockholders - Schedule of Common Stock Equivalents Excluded from Computation of Diluted Earnings (Loss) Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Apr. 30, 2022	May 01, 2021	Apr. 30, 2022	May 01, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings (loss) per share (in shares)	21,279,170	11,357,884	21,279,170	11,935,297
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings (loss) per share (in shares)	16,878,676	8,384,774	16,878,676	8,725,064
Stock Options | Class A Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings (loss) per share (in shares)	3,270,987	1,445,964	3,270,987	1,352,936
Stock Options | Class B Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted earnings (loss) per share (in shares)	1,129,507	1,527,146	1,129,507	1,857,297

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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+ References

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