Contingencies (Details)	12 Months Ended
	Dec. 31, 2020 States Case
Litigation and Contingencies [Abstract]
Number of states in the antitrust litigation | States	41
Humana and Centene Actions [Member]
Litigation and Contingencies [Abstract]
Number of causes alleged	5
California Complaint [Member]
Litigation and Contingencies [Abstract]
Number of causes alleged	3