Net Loss Per Share Attributable to Common Stockholders - EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net loss attributable to Class A and Class B common stockholders, basic	$ (54,990)	$ (53,168)	$ (182,587)	$ (158,454)
Net loss attributable to Class A and Class B common stockholders, diluted	$ (54,990)	$ (53,168)	$ (182,587)	$ (158,454)
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	529,488,986	548,990,212	535,797,471	545,614,599
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	529,488,986	548,990,212	535,797,471	545,614,599
Net loss per share attributable to Class A and Class B common stockholders, basic (in dollars per share)	$ (0.10)	$ (0.10)	$ (0.34)	$ (0.29)
Net loss per share attributable to Class A and Class B common stockholders, diluted (in dollars per share)	$ (0.10)	$ (0.10)	$ (0.34)	$ (0.29)