Net Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Numerator:
Net loss	$ (111,000)	$ (210,000)	$ (230,000)	$ (453,000)
Denominator:
Weighted-average shares used to compute net loss per share, basic (in shares)	162,755	157,400	162,051	156,650
Weighted-average shares used to compute net loss per share, diluted (in shares)	162,755	157,400	162,051	156,650
Net loss per share, basic (in dollars per share)	$ (0.68)	$ (1.34)	$ (1.42)	$ (2.89)
Net loss per share, diluted (in dollars per share)	$ (0.68)	$ (1.34)	$ (1.42)	$ (2.89)
Class A Common Stock
Numerator:
Net loss	$ (106,000)	$ (201,000)	$ (220,000)	$ (433,000)
Denominator:
Weighted-average shares used to compute net loss per share, basic (in shares)	155,455	150,409	154,751	149,666
Weighted-average shares used to compute net loss per share, diluted (in shares)	155,455	150,409	154,751	149,666
Net loss per share, basic (in dollars per share)	$ (0.68)	$ (1.34)	$ (1.42)	$ (2.89)
Net loss per share, diluted (in dollars per share)	$ (0.68)	$ (1.34)	$ (1.42)	$ (2.89)
Class B Common Stock
Numerator:
Net loss	$ (5,000)	$ (9,000)	$ (10,000)	$ (20,000)
Denominator:
Weighted-average shares used to compute net loss per share, basic (in shares)	7,300	6,991	7,300	6,984
Weighted-average shares used to compute net loss per share, diluted (in shares)	7,300	6,991	7,300	6,984
Net loss per share, basic (in dollars per share)	$ (0.68)	$ (1.34)	$ (1.42)	$ (2.89)
Net loss per share, diluted (in dollars per share)	$ (0.68)	$ (1.34)	$ (1.42)	$ (2.89)