Goodwill Goodwill (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Goodwill [Line Items]
December 31, 2012	$ 597.7
Direct drive systems transfer (1)
Purchase accounting adjustments	(0.6)
Translation	(12.0)
September 30, 2013	585.1
Subsea Technologies [Member]
Goodwill [Line Items]
December 31, 2012	342.3
Direct drive systems transfer (1)	66.9	[1]
Purchase accounting adjustments	0.3
Translation	(9.9)
September 30, 2013	399.6
Surface Technologies [Member]
Goodwill [Line Items]
December 31, 2012	97.1
Direct drive systems transfer (1)
Purchase accounting adjustments	(0.9)
Translation	(2.1)
September 30, 2013	94.1
Energy Infrastructure [Member]
Goodwill [Line Items]
December 31, 2012	158.3
Direct drive systems transfer (1)	(66.9)	[1]
Purchase accounting adjustments
Translation
September 30, 2013	$ 91.4

[1] Beginning in the third quarter of 2013, direct drive systems is reported as a product line in Subsea Technologies. See additional disclosure in Note 15.