Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	[1]	$ 319,939	$ 222,057	$ 616,996	$ 437,128
Evolent Health Services
Disaggregation of Revenue [Line Items]
Revenue		92,336	74,863	199,194	159,700
Evolent Health Services | Medicaid
Disaggregation of Revenue [Line Items]
Revenue		55,422	52,064	122,336	112,993
Evolent Health Services | Medicare
Disaggregation of Revenue [Line Items]
Revenue		9,863	6,346	14,696	14,684
Evolent Health Services | Commercial and other
Disaggregation of Revenue [Line Items]
Revenue		27,051	16,453	62,162	32,023
Clinical Solutions
Disaggregation of Revenue [Line Items]
Revenue		227,603	147,194	417,802	277,428
Clinical Solutions | Medicaid
Disaggregation of Revenue [Line Items]
Revenue		86,080	53,648	156,967	96,987
Clinical Solutions | Medicare
Disaggregation of Revenue [Line Items]
Revenue		101,529	90,761	193,796	176,544
Clinical Solutions | Commercial and other
Disaggregation of Revenue [Line Items]
Revenue		$ 39,994	$ 2,785	$ 67,039	$ 3,897

[1] See Note 18 for amounts attributable to unconsolidated related parties included in these line items.