Organization and Basis of Presentation (Details) member in Millions	3 Months Ended
	Mar. 31, 2020 member segment state
Segment Reporting Information [Line Items]
Number of reportable segments (in segment) | segment	2
Health Plans
Segment Reporting Information [Line Items]
Number of states in which entity operates (in state) | state	14
Number of members eligible for the health care programs, approximately (in member) | member	3.4
Minimum | Health Plans
Segment Reporting Information [Line Items]
Contract term	3 years
Maximum | Health Plans
Segment Reporting Information [Line Items]
Contract term	5 years