CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (391,347)	$ (260,101)	$ (262,803)
Other comprehensive income (loss):
Net unrealized gain (loss) on marketable securities, net of tax	960	2,235	3,183
Foreign currency translation adjustment	44	(25)	79
Total comprehensive income (loss)	(390,343)	(257,891)	(259,541)
Comprehensive (income) loss attributable to noncontrolling interests	0	(50)	207
Total comprehensive income (loss) attributable to agilon health, inc.	$ (390,343)	$ (257,941)	$ (259,334)