Convertible Senior Notes - Components of Notes (Parenthetical) (Details) - Convertible Debt - USD ($) $ in Millions	Apr. 30, 2022	Jul. 31, 2021
2023 Convertible Senior Notes
Debt Instrument [Line Items]
Effective interest rate	0.41%	6.62%
Payments of offering costs		$ (3.0)
2026 Convertible Senior Notes
Debt Instrument [Line Items]
Effective interest rate	7.05%
2027 Convertible Senior Notes
Debt Instrument [Line Items]
Effective interest rate	0.52%

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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