Commitments and Contingencies (Narrative) (Details) $ in Millions	1 Months Ended	9 Months Ended
	Oct. 31, 2016 USD ($)	Sep. 30, 2016 defendant
Subsequent Event [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount | $	$ 4.6
Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of other remaining steel manufacturing company defendants served with a class action antitrust complaint		2
Loss Contingency, Number of Defendants		8