Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity/(Deficit) - USD ($) $ in Thousands	Total	Series H Preferred Stock	Preferred Stock	Class A and Class B Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive (Loss) Income	Accumulated Deficit	Non- controlling Interest
Beginning balance (in shares) at Dec. 31, 2020			337,235,000
Beginning balance at Dec. 31, 2020			$ 344,827
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Series H preferred stock, net (in shares)		11,889,000
Issuance of Series H preferred stock, net		$ 534,286
Conversion of convertible preferred stock to common stock in connection with the direct listing (in shares)			(349,124,000)
Conversion of convertible preferred stock to common stock in connection with the direct listing			$ (879,113)
Ending balance (in shares) at Sep. 30, 2021			0
Ending balance at Sep. 30, 2021			$ 0
Balances beginning ( in shares) at Dec. 31, 2020				201,327,000
Balance beginning at Dec. 31, 2020	$ (232,381)			$ 20	$ 239,792	$ 90	$ (492,290)	$ 20,007
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of stock option (in shares)				27,083,000
Issuance of common stock upon exercise of stock options	51,014			$ 3	51,056			(45)
Issuance of common stock in connection with the acquisition of a business (in shares)				487,000
Issuance of common stock from acquisition of a business	31,274				31,274
Issuance of common stock under ESPP (in shares)				191,000
Issuance of common stock under ESPP	11,268				11,268
Conversion of convertible preferred stock to common stock in connection with the direct listing (in shares)				349,124,000
Conversion of convertible preferred stock to common stock in connection with the direct listing	879,113			$ 35	879,078
Release of restricted stock units (in shares)				258,000
Others (in shares)				1,000
Others						0
Stock- based compensation	221,722				221,722
Cumulative translation adjustments	44					22		22
Net loss	(356,223)						(348,353)	(7,870)
Balance ending (Shares) at Sep. 30, 2021				578,471,000
Balance ending at Sep. 30, 2021	605,831			$ 58	1,434,190	112	(840,643)	12,114
Beginning balance (in shares) at Jun. 30, 2021			0
Beginning balance at Jun. 30, 2021			$ 0
Ending balance (in shares) at Sep. 30, 2021			0
Ending balance at Sep. 30, 2021			$ 0
Balances beginning ( in shares) at Jun. 30, 2021				574,595,000
Balance beginning at Jun. 30, 2021	542,039			$ 57	1,293,160	114	(766,641)	15,349
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of stock option (in shares)				2,944,000
Issuance of common stock upon exercise of stock options	9,125			$ 1	9,169			(45)
Issuance of common stock in connection with the acquisition of a business (in shares)				487,000
Issuance of common stock from acquisition of a business	31,274				31,274
Issuance of common stock under ESPP (in shares)				191,000
Issuance of common stock under ESPP	11,268				11,268
Release of restricted stock units (in shares)				254,000
Others	0
Stock- based compensation	89,319				89,319
Cumulative translation adjustments	(4)					(2)		(2)
Net loss	(77,190)						(74,002)	(3,188)
Balance ending (Shares) at Sep. 30, 2021				578,471,000
Balance ending at Sep. 30, 2021	$ 605,831			$ 58	1,434,190	112	(840,643)	12,114
Beginning balance (in shares) at Dec. 31, 2021			0
Beginning balance at Dec. 31, 2021			$ 0
Ending balance (in shares) at Sep. 30, 2022			0
Ending balance at Sep. 30, 2022			$ 0
Balances beginning ( in shares) at Dec. 31, 2021	585,878,000			585,878,000
Balance beginning at Dec. 31, 2021	$ 592,923			$ 58	1,568,638	62	(983,941)	8,106
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of stock option (in shares)	8,176,000			8,176,000
Issuance of common stock upon exercise of stock options	$ 19,673			$ 1	19,672
Issuance of common stock in connection with the acquisition of a business (in shares)				385,000
Issuance of common stock from acquisition of a business	10,138				10,138
Issuance of common stock under ESPP (in shares)				575,000
Issuance of common stock under ESPP	22,702				22,702
Conversion of convertible preferred stock to common stock in connection with the direct listing	0
Release of restricted stock units (in shares)				5,575,000
Withholding taxes related to net share settlement of restricted stock units (in shares)				(3,000)
Withholding taxes related to net share settlement of restricted stock units	(150)				(150)
Exercise of common stock warrants (in shares)				60,000
Exercise of common stock warrants	204				204
Others (in shares)				(5,000)
Others	(204)				(204)
Stock- based compensation	420,042				420,042
Cumulative translation adjustments	1,921					935		986
Net loss	$ (642,656)						(634,440)	(8,216)
Balance ending (Shares) at Sep. 30, 2022	600,641,000			600,641,000
Balance ending at Sep. 30, 2022	$ 424,593			$ 59	2,041,042	997	(1,618,381)	876
Beginning balance (in shares) at Jun. 30, 2022			0
Beginning balance at Jun. 30, 2022			$ 0
Ending balance (in shares) at Sep. 30, 2022			0
Ending balance at Sep. 30, 2022			$ 0
Balances beginning ( in shares) at Jun. 30, 2022				596,622,000
Balance beginning at Jun. 30, 2022	551,593			$ 59	1,867,204	408	(1,320,583)	4,505
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of stock option (in shares)				1,820,000
Issuance of common stock upon exercise of stock options	4,020				4,020
Issuance of common stock under ESPP (in shares)				240,000
Issuance of common stock under ESPP	8,459				8,459
Release of restricted stock units (in shares)				1,959,000
Others	0
Stock- based compensation	161,359				161,359
Cumulative translation adjustments	1,064					589		475
Net loss	$ (301,902)						(297,798)	(4,104)
Balance ending (Shares) at Sep. 30, 2022	600,641,000			600,641,000
Balance ending at Sep. 30, 2022	$ 424,593			$ 59	$ 2,041,042	$ 997	$ (1,618,381)	$ 876