Debt and Capital Lease Obligations (VM Credit Facility) (Details) € in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016 EUR (€)	Mar. 31, 2016 USD ($)
VM Facility G [Member]
Debt Instrument [Line Items]
Facility amount	€ 75.0	$ 85.4
VM Facility G [Member] | EURIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Floor rate	0.75%	0.75%
VM Facility H [Member]
Debt Instrument [Line Items]
Facility amount	€ 25.0	$ 28.5
VM Facility H [Member] | EURIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.75%
Floor rate	0.00%	0.00%