Legal Proceedings and Other Contingencies (Details) - Viareggio [Member] € in Millions	3 Months Ended
	Sep. 30, 2017 EUR (€) cases	Jun. 29, 2009 Car
Loss Contingencies [Line Items]
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims | €	€ 1.4
Loss Contingency, Pending Claims, Number | cases	56
Derailed [Member]
Loss Contingencies [Line Items]
Number of railars		14
Overturned [Member]
Loss Contingencies [Line Items]
Number of railars		5
Punctured and Ignited [Member]
Loss Contingencies [Line Items]
Number of railars		1