Legal Proceedings and Other Contingencies Legal Proceedings and Other Contingencies (Details) - Viareggio [Member] € in Millions	3 Months Ended
	Mar. 31, 2019 EUR (€)	Jun. 29, 2009 Car
Legal Proceedings and Other Contingencies [Line Items]
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims | €	€ 1.4
Overturned [Member]
Legal Proceedings and Other Contingencies [Line Items]
Number of railars		5
Punctured and Ignited [Member]
Legal Proceedings and Other Contingencies [Line Items]
Number of railars		1
Derailed [Member]
Legal Proceedings and Other Contingencies [Line Items]
Number of railars		14