Net Loss per Share Attributable to Common Stockholders - Schedule of Computation of Basic and Diluted Earnings per Share Attributable to Common Stockholders (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss attributable to common stockholders	$ (183,949)	$ (193,381)	$ (260,309)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	333,656	326,332	312,321
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	333,656	326,332	312,321
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.55)	$ (0.59)	$ (0.83)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.55)	$ (0.59)	$ (0.83)
Class A common stock | Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss attributable to common stockholders	$ (161,296)	$ (167,770)	$ (219,939)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	292,568	283,114	263,884
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	292,568	283,114	263,884
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.55)	$ (0.59)	$ (0.83)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.55)	$ (0.59)	$ (0.83)
Class B common stock | Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss attributable to common stockholders	$ (22,653)	$ (25,611)	$ (40,370)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	41,088	43,218	48,437
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	41,088	43,218	48,437
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.55)	$ (0.59)	$ (0.83)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.55)	$ (0.59)	$ (0.83)