Net Loss Per Share Attributable to Common Stockholders - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net loss attributable to common stockholders	$ (69,400)	$ (104,624)
Denominator:
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	495,892,915	462,254,442
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	495,892,915	462,254,442
Net loss per share attributable to common stockholders:
Net loss per share attributable to common stockholders, basic (in usd per share)	$ (0.14)	$ (0.23)
Net loss per share attributable to common stockholders, diluted (in usd per share)	$ (0.14)	$ (0.23)
Class A Common Stock
Numerator:
Net loss attributable to common stockholders	$ (46,075)	$ (66,563)
Denominator:
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	329,225,146	294,089,562
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	329,225,146	294,089,562
Net loss per share attributable to common stockholders:
Net loss per share attributable to common stockholders, basic (in usd per share)	$ (0.14)	$ (0.23)
Net loss per share attributable to common stockholders, diluted (in usd per share)	$ (0.14)	$ (0.23)
Class B Common Stock
Numerator:
Net loss attributable to common stockholders	$ (23,325)	$ (38,061)
Denominator:
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	166,667,769	168,164,880
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	166,667,769	168,164,880
Net loss per share attributable to common stockholders:
Net loss per share attributable to common stockholders, basic (in usd per share)	$ (0.14)	$ (0.23)
Net loss per share attributable to common stockholders, diluted (in usd per share)	$ (0.14)	$ (0.23)