Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Class A and Class B Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income/(Loss)	Accumulated Deficit	Non- Controlling Interest
Balances beginning (in shares) at Dec. 31, 2022		604,674
Balance beginning at Dec. 31, 2022	$ 305,035	$ 59	$ 2,213,603	$ 671	$ (1,908,307)	$ (991)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		7,618
Issuance of common stock upon exercise of stock options	17,641	$ 1	17,640
Issuance of common stock under Employee Stock Purchase Plan (in shares)		1,065
Issuance of common stock under Employee Stock Purchase Plan	29,629		29,629
Vesting of restricted stock units (in shares)		10,231
Stock-based compensation expense	617,288		617,288
Other comprehensive income/(loss)	(16,142)			(16,550)		408
Net loss	(833,597)				(828,248)	(5,349)
Balance ending (in shares) at Sep. 30, 2023		623,588
Balance ending at Sep. 30, 2023	119,854	$ 60	2,878,160	(15,879)	(2,736,555)	(5,932)
Balances beginning (in shares) at Jun. 30, 2023		616,301
Balance beginning at Jun. 30, 2023	164,200	$ 60	2,641,929	(14,095)	(2,459,397)	(4,297)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		3,047
Issuance of common stock upon exercise of stock options	6,501		6,501
Issuance of common stock under Employee Stock Purchase Plan (in shares)		426
Issuance of common stock under Employee Stock Purchase Plan	9,708		9,708
Vesting of restricted stock units (in shares)		3,814
Stock-based compensation expense	220,022		220,022
Other comprehensive income/(loss)	(1,769)			(1,784)		15
Net loss	(278,808)				(277,158)	(1,650)
Balance ending (in shares) at Sep. 30, 2023		623,588
Balance ending at Sep. 30, 2023	$ 119,854	$ 60	2,878,160	(15,879)	(2,736,555)	(5,932)
Balances beginning (in shares) at Dec. 31, 2023	631,221	631,221
Balance beginning at Dec. 31, 2023	$ 68,626	$ 61	3,134,946	1,536	(3,060,253)	(7,664)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	7,815	7,815
Issuance of common stock upon exercise of stock options	$ 21,221	$ 1	21,220
Issuance of common stock under Employee Stock Purchase Plan (in shares)		1,530
Issuance of common stock under Employee Stock Purchase Plan	35,767		35,767
Vesting of restricted stock units (in shares)		15,566
Stock-based compensation expense	757,558		757,558
Other comprehensive income/(loss)	14,848			14,880		(32)
Net loss	$ (719,562)				(715,811)	(3,751)
Balance ending (in shares) at Sep. 30, 2024	656,132	656,132
Balance ending at Sep. 30, 2024	$ 178,458	$ 62	3,949,491	16,416	(3,776,064)	(11,447)
Balances beginning (in shares) at Jun. 30, 2024		646,611
Balance beginning at Jun. 30, 2024	111,301	$ 61	3,664,414	(6,229)	(3,536,740)	(10,205)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		3,529
Issuance of common stock upon exercise of stock options	8,888	$ 1	8,887
Issuance of common stock under Employee Stock Purchase Plan (in shares)		445
Issuance of common stock under Employee Stock Purchase Plan	11,025		11,025
Vesting of restricted stock units (in shares)		5,547
Stock-based compensation expense	265,165		265,165
Other comprehensive income/(loss)	22,526			22,645		(119)
Net loss	$ (240,447)				(239,324)	(1,123)
Balance ending (in shares) at Sep. 30, 2024	656,132	656,132
Balance ending at Sep. 30, 2024	$ 178,458	$ 62	$ 3,949,491	$ 16,416	$ (3,776,064)	$ (11,447)