Segment Information (Narrative) (Details) $ in Millions	9 Months Ended
Sep. 30, 2019 USD ($) country
Segment Reporting Information [Line Items]
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings \| $	$ (28.9)
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

Amount of realized and unrealized gain (loss) included in earnings, which have arisen from the use of significant unobservable inputs (level 3) to measure fair value of assets, liabilities, and financial instruments classified in shareholders' equity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

Name:	us-gaap_FairValueMeasuredOnRecurringBasisGainLossIncludedInEarnings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration