Segment Information Foreign Currency Exchange Rates (Details)	Sep. 30, 2019 $ / £	Sep. 30, 2019 $ / $	Sep. 30, 2019 $ / $	Sep. 30, 2019 $ / €	Dec. 31, 2018 $ / £	Dec. 31, 2018 $ / $	Dec. 31, 2018 $ / $	Dec. 31, 2018 $ / €	Sep. 30, 2018 $ / £	Sep. 30, 2018 $ / $	Sep. 30, 2018 $ / $	Sep. 30, 2018 $ / €
Last day rate [Member]
Foreign Currency Exchange Rate, Translation	1.23	0.67	0.76	1.09	1.28	0.70	0.73	1.15
Quarter to Date Average [Member]
Foreign Currency Exchange Rate, Translation	1.23	0.69	0.76	1.11					1.30	0.73	0.77	1.16
Year to Date Average [Member]
Foreign Currency Exchange Rate, Translation	1.27	0.70	0.75	1.12					1.35	0.76	0.78	1.19