Medical Claims and Related Payables - Summary Changes in Medical Claims and Related Payables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Medical claims and related payables, beginning of the year	$ 339,749	$ 239,014	$ 164,161
Components of incurred costs related to:
Incurred cost related to claims	4,278,881	2,399,832	1,646,795
Claims paid related to:
Claims paid related	(3,895,559)	(2,299,097)	(1,571,942)
Medical claims and related payables, end of the year	723,071	339,749	239,014
Discontinued Operations
Components of incurred costs related to:
Current year	263,215	303,365	294,877
Prior years	7,008	2,607	(5,409)
Claims paid related to:
Current year	(263,215)	(258,733)	(252,736)
Prior years	(51,025)	(47,393)	(63,527)
Continuing Operations
Components of incurred costs related to:
Current year	3,956,873	2,084,009	1,351,495
Prior years	51,785	9,851	5,832
Claims paid related to:
Current year	(3,237,050)	(1,792,303)	(1,164,903)
Prior years	$ (344,269)	$ (200,668)	$ (90,776)