Net Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Numerator:
Net loss	$ (81)	$ (209)	$ (311)	$ (662)
Denominator:
Weighted-average shares outstanding, basic (in shares)	164,381	158,708	162,836	157,344
Weighted-average shares outstanding, diluted (in shares)	164,381	158,708	162,836	157,344
Net loss per share, basic (in dollars per share)	$ (0.49)	$ (1.32)	$ (1.91)	$ (4.21)
Net loss per share, diluted (in dollars per share)	$ (0.49)	$ (1.32)	$ (1.91)	$ (4.21)
Class A Common Stock
Numerator:
Net loss	$ (77)	$ (200)	$ (297)	$ (632)
Denominator:
Weighted-average shares outstanding, basic (in shares)	157,081	151,535	155,536	150,296
Weighted-average shares outstanding, diluted (in shares)	157,081	151,535	155,536	150,296
Net loss per share, basic (in dollars per share)	$ (0.49)	$ (1.32)	$ (1.91)	$ (4.21)
Net loss per share, diluted (in dollars per share)	$ (0.49)	$ (1.32)	$ (1.91)	$ (4.21)
Class B Common Stock
Numerator:
Net loss	$ (4)	$ (9)	$ (14)	$ (30)
Denominator:
Weighted-average shares outstanding, basic (in shares)	7,300	7,173	7,300	7,048
Weighted-average shares outstanding, diluted (in shares)	7,300	7,173	7,300	7,048
Net loss per share, basic (in dollars per share)	$ (0.49)	$ (1.32)	$ (1.91)	$ (4.21)
Net loss per share, diluted (in dollars per share)	$ (0.49)	$ (1.32)	$ (1.91)	$ (4.21)