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Net Loss Per Share Attributable to Common Stockholders - Potential Shares Excluded From Computation of Diluted Net Loss Per Share (Details) - shares | 6 Months Ended
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Oct. 31, 2021 | Oct. 31, 2020
Series A |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 3,499,992
Series B |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 4,559,999
Series B-1A |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 2,430,635
Series B-1B |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 92,769
Series C |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 2,779,738
Series D |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 12,278,422
Series E |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 540,003
Series F |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 5,399,581
Series G |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 3,893,701
Series H |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 0 | 1,653,928
Stock options |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 37,824,606 | 43,428,121
RSUs |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Potentially antidilutive shares excluded from computation of net loss per share (in shares) | 6,041,895 | 0

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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 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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