Business Segment Information (Schedule Of Segment Revenue And Segment Operating Profit) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Segment Reporting Information [Line Items]
Total revenue	$ 1,707.9		$ 1,494.9		$ 3,353.9		$ 2,891.5
Total segment operating profit	199.4		203.0		366.0		365.4
Net interest expense	(8.8)		(6.4)		(16.9)		(9.9)
Income before income taxes attributable to FMC Technologies, Inc.	146.6		156.5		277.8		286.0
Operating segments [Member] | Subsea Technologies [Member]
Segment Reporting Information [Line Items]
Total revenue	1,123.7		945.8		2,215.9		1,840.7
Total segment operating profit	123.4		109.7		222.8		184.8
Operating segments [Member] | Surface Technologies [Member]
Segment Reporting Information [Line Items]
Total revenue	440.2		413.8		861.9		791.6
Total segment operating profit	57.3		84.2		114.6		162.2
Operating segments [Member] | Energy Infrastructure [Member]
Segment Reporting Information [Line Items]
Total revenue	158.0		139.4		293.6		276.4
Total segment operating profit	18.5		9.1		28.6		18.4
Other revenue and intercompany eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	(14.0)	[1]	(4.1)	[1]	(17.5)	[1]	(17.2)	[1]
Intercompany eliminations [Member]
Segment Reporting Information [Line Items]
Total segment operating profit	0.2
Corporate items [Member]
Segment Reporting Information [Line Items]
Corporate expense	(12.5)	[2]	(10.4)	[2]	(22.8)	[2]	(18.9)	[2]
Other revenue and other expense, net	(31.5)	[1],[3]	(29.7)	[1],[3]	(48.5)	[1],[3]	(50.6)	[1],[3]
Net interest expense	(8.8)		(6.4)		(16.9)		(9.9)
Total corporate items	$ (52.8)		$ (46.5)		$ (88.2)		$ (79.4)

[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.