Convertible Senior Notes, Net - Schedule of Liability and Equity Component of Notes (Details) - Senior Notes - USD ($) $ in Thousands	Jul. 31, 2022	Jan. 31, 2022
2023 convertible senior notes
Liability component:
Principal	$ 5,226	$ 17,228
Less: unamortized debt issuance costs and debt discount	(17)	(1,034)
Net carrying amount	5,209	16,194
2025 convertible senior notes
Liability component:
Principal	1,059,997	1,059,997
Less: unamortized debt issuance costs and debt discount	(10,048)	(149,333)
Net carrying amount	1,049,949	910,664
2026 convertible senior notes
Liability component:
Principal	1,150,000	1,150,000
Less: unamortized debt issuance costs and debt discount	(9,839)	(244,950)
Net carrying amount	$ 1,140,161	905,050
Additional Paid-in Capital | 2023 convertible senior notes
Equity component:
Equity component		3,993
Less: issuance costs		(116)
Carrying amount of the equity component		3,877
Additional Paid-in Capital | 2025 convertible senior notes
Equity component:
Equity component		221,387
Less: issuance costs		(4,040)
Carrying amount of the equity component		217,347
Additional Paid-in Capital | 2026 convertible senior notes
Equity component:
Equity component		310,311
Less: issuance costs		(4,090)
Carrying amount of the equity component		$ 306,221