Business Segments (Schedule Of Segment Revenue And Segment Operating Profit) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information
Total revenue		$ 1,208.7	$ 1,695.2
Total segment operating profit		77.6	234.5
Net interest expense		(7.5)	(7.3)
Income before income taxes attributable to FMC Technologies, Inc.	[1]	25.8	184.5
Operating segments | Subsea Technologies
Segment Reporting Information
Total revenue		864.0	1,157.2
Total segment operating profit		109.5	168.7
Operating segments | Surface Technologies
Segment Reporting Information
Total revenue		265.5	446.3
Total segment operating profit		(28.6)	62.9
Operating segments | Energy Infrastructure
Segment Reporting Information
Total revenue		84.1	100.9
Total segment operating profit		(3.3)	2.9
Segment reconciling items
Segment Reporting Information
Total revenue	[2]	(4.9)	(9.2)
Corporate items
Segment Reporting Information
Corporate expense	[3]	(14.3)	(16.3)
Other revenue and other expense, net	[2],[4]	(30.0)	(26.4)
Net interest expense		(7.5)	(7.3)
Total corporate items		$ (51.8)	$ (50.0)

[1] Excludes amounts attributable to noncontrolling interests.

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

[3] Corporate expense primarily includes corporate staff expenses.

[4] 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.