Net Loss Per Share - Additional Information (Details)	3 Months Ended
Oct. 31, 2021
ASU 2020-06
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
New Accounting Pronouncement or Change in Accounting Principle	We adopted ASU 2020-06 on August 1, 2021 using the modified retrospective method, applicable to our convertible senior notes outstanding as of adoption. We have not changed any previously disclosed amounts or provided additional disclosures for comparative periods. ASU 2020-06 requires the if-converted method to be applied for all convertible instruments when calculating diluted earnings per share.

Description of the indirect effects of a change in accounting principle, including the amounts that have been recognized in the current period and related per share (or unit) amounts, if applicable. Indirect changes are any changes to current or future cash flows of an entity that result from making a change in accounting principle that is applied retrospectively. An example of an indirect effect is a change in a nondiscretionary profit sharing or royalty payment that is based on a reported mount such as revenue or net income.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794

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