Business, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) - segment	9 Months Ended
Sep. 30, 2019	Aug. 04, 2017
Restructuring Cost and Reserve [Line Items]
Number of Reportable Segments	3
Spinoff
Restructuring Cost and Reserve [Line Items]
Common Stock Distribution by Parent		80.80%

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

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