Commitments and Contingencies - (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Claims amount for terminated contract	$ 67.9
Additional claim amount for terminated contract	57.0
Breach of contract counter suit amount	182.0
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	1,200.0
Natural Gas Storage System in Northern Germany [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 170.0
Loss Contingency, Damages Sought, interest rate	5.00%
Construction and Engineering Contract in Europe [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 369.0
Chieftain Sand and Proppant Barron Arbitration [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 110.0