Convertible Senior Notes, Net - Schedule of Convertible Debt (Details) - Senior Notes $ in Thousands	Jan. 31, 2022 USD ($)
2023 Notes
Liability component:
Principal	$ 17,228
Less: unamortized debt issuance costs and debt discount	(1,034)
Net carrying amount	16,194
2025 Notes
Liability component:
Principal	1,059,997
Less: unamortized debt issuance costs and debt discount	(149,333)
Net carrying amount	910,664
2026 Notes
Liability component:
Principal	1,150,000
Less: unamortized debt issuance costs and debt discount	(244,950)
Net carrying amount	905,050
Additional Paid-in Capital | 2023 Notes
Equity component:
Notes	3,993
Less: issuance costs	(116)
Carrying amount of the equity component	3,877
Additional Paid-in Capital | 2025 Notes
Equity component:
Notes	221,387
Less: issuance costs	(4,040)
Carrying amount of the equity component	217,347
Additional Paid-in Capital | 2026 Notes
Equity component:
Notes	310,311
Less: issuance costs	(4,090)
Carrying amount of the equity component	$ 306,221