Medical Claims and Related Payables - Summary Changes in Medical Claims and Related Payables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Medical claims and related payables, beginning of the year	$ 723,071	$ 339,749	$ 239,014
Components of incurred costs related to:
Incurred cost related to claims	5,842,530	4,278,881	2,399,832
Claims paid related to:
Claims paid related	(5,647,207)	(3,895,559)	(2,299,097)
Medical claims and related payables, end of the year	918,394	723,071	339,749
Continuing Operations
Components of incurred costs related to:
Current year	5,798,709	3,956,874	2,084,009
Prior years	43,821	51,785	9,851
Claims paid related to:
Current year	(4,878,351)	(3,237,050)	(1,792,303)
Prior years	(768,856)	(344,269)	(200,668)
Discontinued Operations
Components of incurred costs related to:
Current year	0	263,214	303,365
Prior years	0	7,008	2,607
Claims paid related to:
Current year	0	(263,215)	(258,733)
Prior years	$ 0	$ (51,025)	$ (47,393)