Net Loss Per Share - Summary of Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net loss	$ (51,127)	$ (115,089)	$ (310,459)	$ (98,122)	$ (65,807)	$ (77,189)	$ (476,675)	$ (241,118)
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, basic	138,118,679			136,766,015			137,817,839	136,256,901
Weighted-average number of shares outstanding used to compute net loss per share attributable to common stockholders, diluted	138,118,679			136,766,015			137,817,839	136,256,901
Net loss per share attributable to common stockholders, basic	$ (0.37)			$ (0.72)			$ (3.46)	$ (1.77)
Net loss per share attributable to common stockholders, diluted	$ (0.37)			$ (0.72)			$ (3.46)	$ (1.77)