Segment Information (Narrative) (Details)	Sep. 30, 2020 country
Europe Segment
Segment Reporting Information [Line Items]
Number of Countries in which Entity Operates	35
Rest of World Segment
Segment Reporting Information [Line Items]
Number of Countries in which Entity Operates	120

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