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		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net income attributable to FMC Technologies, Inc.	$ 169.8	$ 116.0	$ 531.3	$ 323.6
Weighted average number of shares outstanding	236.4	238.2	236.8	238.4
Dilutive effect of restricted stock units and stock options	0.6	0.7	0.5	0.8
Total shares and dilutive securities	237.0	238.9	237.3	239.2
Basic earnings per share attributable to FMC Technologies, Inc.	$ 0.72	$ 0.49	$ 2.24	$ 1.36
Diluted earnings per share attributable to FMC Technologies, Inc.	$ 0.72	$ 0.49	$ 2.24	$ 1.35