General - Business Overview (Details) - Healthcare - segment	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
General
Number of reporting units, before discontinued operation	2	2	2
Number of reporting units	1	1	1

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

No definition available.

Name:	us-gaap_NumberOfReportingUnits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration