Summary of Significant Accounting Policies (Use of Estimates) (Details) (European Segment [Member], Submarine Turnkey Project [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2014
Segment Reporting Information [Line Items]
Reduction to gross profit	$ (27.5)
Germany [Member]
Segment Reporting Information [Line Items]
Reduction to gross profit	(20.8)	18.3
Expenses for ongoing project	13.3
Reduction in margin	$ 7.5