Earnings Per Share (Reconciliation Of Number Of Shares Used For Basic And Diluted Earnings Per Share ("EPS") Calculation ) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Net income attributable to FMC Technologies, Inc.	$ 105.2	$ 111.9	$ 207.6	$ 210.7
Weighted average number of shares outstanding	238.3	240.2	238.4	240.2
Dilutive effect of restricted stock units and stock options	1.0	1.3	0.9	1.2
Total shares and dilutive securities	239.3	241.5	239.3	241.4
Basic earnings per share attributable to FMC Technologies, Inc.	$ 0.44	$ 0.47	$ 0.87	$ 0.88
Diluted earnings per share attributable to FMC Technologies, Inc.	$ 0.44	$ 0.46	$ 0.87	$ 0.87