General - Pharmacy Benefit Administration Revenue (Details)	9 Months Ended
Sep. 30, 2020
Minimum
Operating results by business segment
Anticipated period of benefit of the material right	2 years
Maximum
Operating results by business segment
Anticipated period of benefit of the material right	10 years

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_EntityWideRevenueMajorCustomerLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration