Other Operational Expenses (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other operational expenses	$ 6.0
Oil and gas, subsidy charges	6.1
Foreign Currency Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other operational expenses	$ 6.0