Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (609,552)	$ (571,426)	$ (406,825)
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale	(6,044)	(4,550)	906
Comprehensive loss	(615,596)	(575,976)	(405,919)
Comprehensive income (loss) attributable to noncontrolling interests	(3,277)	1,180	0
Comprehensive loss attributable to Oscar Health, Inc.	$ (612,319)	$ (577,156)	$ (405,919)