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Fair Value Measurements - Non-recurring Basis (Details) - Fair Value, Measurements, Nonrecurring - Convertible Debt - USD ($) $ in Thousands	Jul. 31, 2024	Jul. 31, 2023
Reported Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible senior note, fair value disclosure	$ 570,073	$ 1,218,165
Reported Value Measurement | 2026 Convertible Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible senior note, fair value disclosure	0	649,630
Reported Value Measurement | 2027 Convertible Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible senior note, fair value disclosure	570,073	568,535
Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible senior note, fair value disclosure	631,178	1,541,299
Estimate of Fair Value Measurement | 2026 Convertible Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible senior note, fair value disclosure	0	1,043,889
Estimate of Fair Value Measurement | 2027 Convertible Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible senior note, fair value disclosure	$ 631,178	$ 497,410

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