Income Taxes - Domestic and Foreign Components of Losses Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
United States	$ (509,088)	$ (326,328)	$ (145,346)
Foreign	(17,558)	(4,799)	(8,461)
Loss before income taxes	$ (526,646)	$ (331,127)	$ (153,807)