Net Loss per Share - Calculation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss	$ (209,294)	$ (295,033)
Denominator:
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	1,756,739,000	434,917,000
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	1,756,739,000	434,917,000
Earnings Per Share, Basic and Diluted [Abstract]
Net loss attributable to Class A and Class B common stockholders per share, basic (in dollars per share)	$ (0.12)	$ (0.68)
Net loss attributable to Class A and Class B common stockholders per share, diluted (in dollars per share)	$ (0.12)	$ (0.68)