Discontinued Operations - Narrative (Details)	Dec. 31, 2019
T-System Holdings, Inc. \| Coding Solutions \| Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest after sale (as a percent)	22.70%

Percent, after disposal, of ownership interest of a discontinued operation in which an equity method investment is retained.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 4B
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721665-107760

Name:	us-gaap_DiscontinuedOperationEquityMethodInvestmentRetainedAfterDisposalOwnershipInterestAfterDisposal
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration