Business Segment Information (Schedule Of Segment Revenue And Segment Operating Profit) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]
Total revenue	$ 1,724.5		$ 1,419.0		$ 5,078.4		$ 4,310.5
Total segment operating profit	213.5		180.7		579.5		546.1
Net interest expense	(8.2)		(6.0)		(25.1)		(15.9)
Income before income taxes attributable to FMC Technologies, Inc.	167.8		133.9		445.6		419.9
Operating segments [Member] | Subsea Technologies [Member]
Segment Reporting Information [Line Items]
Total revenue	1,119.9		929.8		3,336.9		2,772.3
Total segment operating profit	121.1		110.4		338.7		286.4
Operating segments [Member] | Surface Technologies [Member]
Segment Reporting Information [Line Items]
Total revenue	455.9		362.8		1,317.8		1,154.4
Total segment operating profit	74.5		57.5		189.1		219.7
Operating segments [Member] | Energy Infrastructure [Member]
Segment Reporting Information [Line Items]
Total revenue	152.4		132.4		444.6		406.5
Total segment operating profit	17.9		12.8		51.7		40.0
Other revenue and intercompany eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	(3.7)	[1]	(6.0)	[1]	(20.9)	[1]	(22.7)	[1]
Corporate items [Member]
Segment Reporting Information [Line Items]
Corporate expense	(10.4)	[2]	(11.5)	[2]	(33.2)	[2]	(30.4)	[2]
Other revenue and other expense, net	(27.1)	[1],[3]	(29.3)	[1],[3]	(75.6)	[1],[3]	(79.9)	[1],[3]
Net interest expense	(8.2)		(6.0)		(25.1)		(15.9)
Total corporate items	$ (45.7)		$ (46.8)		$ (133.9)		$ (126.2)

[1] Other revenue comprises certain unrealized gains and losses on derivative instruments related to unexecuted sales contracts.

[2] Corporate expense primarily includes corporate staff expenses.

[3] Other expense, net, generally includes stock-based compensation, other employee benefits, LIFO adjustments, certain foreign exchange gains and losses, and the impact of unusual or strategic transactions not representative of segment operations.