Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue		$ 713,225	$ 517,707	$ 2,049,335	$ 1,646,048
Cost and expenses:
Cost of revenue	[1]	163,581	126,437	477,451	405,226
Developer exchange fees		170,719	151,470	519,002	441,740
Infrastructure and trust & safety		218,968	190,986	655,051	490,576
Research and development		321,613	235,551	912,469	625,070
General and administrative		97,508	81,165	291,279	217,613
Sales and marketing		40,874	32,105	97,957	87,708
Total cost and expenses		1,013,263	817,714	2,953,209	2,267,933
Loss from operations		(300,038)	(300,007)	(903,874)	(621,885)
Interest income		36,442	12,764	102,288	17,206
Interest expense		(10,268)	(10,005)	(30,409)	(29,895)
Other income/(expense), net		(4,262)	(4,302)	(1,425)	(7,732)
Loss before income taxes		(278,126)	(301,550)	(833,420)	(642,306)
Provision for/(benefit from) income taxes		682	352	177	350
Consolidated net loss		(278,808)	(301,902)	(833,597)	(642,656)
Net loss attributable to noncontrolling interests		(1,650)	(4,104)	(5,349)	(8,216)
Net loss attributable to common stockholders		$ (277,158)	$ (297,798)	$ (828,248)	$ (634,440)
Net loss per share attributable to common stockholders, basic (in dollars per share)		$ (0.45)	$ (0.50)	$ (1.35)	$ (1.07)
Net loss per share attributable to common stockholders, diluted (in dollars per share)		$ (0.45)	$ (0.50)	$ (1.35)	$ (1.07)
Weighted-average shares used in computing net loss per share attributable to common stockholders—basic (in shares)		619,350	597,779	612,938	593,452
Weighted-average shares used in computing net loss per share attributable to common stockholders—diluted (in shares)		619,350	597,779	612,938	593,452

[1] Depreciation of servers and infrastructure equipment included in infrastructure and trust & safety.