Net Income (Loss) Per Share - Schedule of Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Numerator
Net income (loss)	$ 96,853	$ (32,620)	$ (162,815)	$ (546,654)
Interest expense of convertible senior notes - 2023 Notes, 2025 Notes, and 2027 Notes	6,261	0		0
Diluted net income	$ 103,114	$ (32,620)	$ (162,815)	$ (546,654)
Denominator
Weighted-average shares used to compute net income (loss) per share, basic (in shares)	167,894	163,044	166,472	161,738
Net income (loss) per share, basic (in dollars per share)	$ 0.58	$ (0.20)	$ (0.98)	$ (3.38)
Weighted-average shares used to compute net income (loss) per share, diluted (in shares)	185,982	163,044	166,472	161,738
Net income (loss) per share
Net income (loss) per share, diluted (in dollars per share)	$ 0.55	$ (0.20)	$ (0.98)	$ (3.38)
Convertible senior notes - 2023 Notes, 2025 Notes, and 2026 Notes
Denominator
Weighted-average effect of potentially dilutive securities (in shares)	14,684	0	0	0
Employee stock awards
Denominator
Weighted-average effect of potentially dilutive securities (in shares)	3,404	0	0	0