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, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Segment Reporting Information
Total revenue	$ 1,976.7		$ 1,724.5		$ 5,786.4		$ 5,078.4
Total segment operating profit	319.1		213.5		855.2		579.5
Net interest expense	(8.0)		(8.2)		(24.5)		(25.1)
Income before income taxes attributable to FMC Technologies, Inc.	259.9	[1]	167.8	[1]	796.1	[1]	445.6	[1]
Assets	7,034.4				7,034.4				6,605.6
Operating segments
Segment Reporting Information
Segment Reporting Segment Operating Capital Employed	3,556.8	[2]			3,556.8	[2]			3,610.8	[2]
Assets	6,236.2				6,236.2				5,883.6
Operating segments | Subsea Technologies
Segment Reporting Information
Segment Reporting Segment Operating Capital Employed	2,039.4	[2]			2,039.4	[2]			2,126.3	[2]
Total revenue	1,300.4		1,119.9		3,831.0		3,336.9
Total segment operating profit	204.4		121.1		539.8		338.7
Assets	4,221.5				4,221.5				3,923.6
Operating segments | Surface Technologies
Segment Reporting Information
Segment Reporting Segment Operating Capital Employed	1,185.6	[2]			1,185.6	[2]			1,139.1	[2]
Total revenue	556.0		455.9		1,546.4		1,317.8
Total segment operating profit	109.5		74.5		276.6		189.1
Assets	1,580.5				1,580.5				1,484.0
Operating segments | Energy Infrastructure
Segment Reporting Information
Segment Reporting Segment Operating Capital Employed	331.8	[2]			331.8	[2]			345.4	[2]
Total revenue	124.9		152.4		419.6		444.6
Total segment operating profit	5.1	[3]	17.9		38.8		51.7
Assets	469.8				469.8				496.4
Other revenue and intercompany eliminations
Segment Reporting Information
Total revenue	(4.6)	[4]	(3.7)	[4]	(10.6)	[4]	(20.9)	[4]
Segment liabilities included in total segment operating capital employed	2,679.4	[5]			2,679.4	[5]			2,272.8	[5]
Intercompany eliminations
Segment Reporting Information
Total segment operating profit	0.1
Assets	(35.6)				(35.6)				(20.4)
Corporate items
Segment Reporting Information
Corporate expense	(16.1)	[6]	(10.4)	[6]	(47.8)	[6]	(33.2)	[6]
Other revenue and other expense, net	(35.1)	[4],[7]	(27.1)	[4],[7]	13.2	[4],[7]	(75.6)	[4],[7]
Net interest expense	(8.0)		(8.2)		(24.5)		(25.1)
Total corporate items	(59.2)		(45.7)		(59.1)		(133.9)
Assets	798.2	[8]			798.2	[8]			722.0	[8]
Restatement Adjustment | Operating segments | Energy Infrastructure
Segment Reporting Information
Total segment operating profit	$ (6.7)	[3]

[1] Excludes amounts attributable to noncontrolling interests.

[2] FMC Technologies’ management views segment operating capital employed, which consists of assets, net of its liabilities, as the primary measure of segment capital. Segment operating capital employed excludes debt, pension liabilities, income taxes, and LIFO and valuation adjustments.

[3] Energy Infrastructure segment operating profit for the three months ended September 30, 2014 was reduced by $6.7 million related to a correction of prior quarters' operating results in 2014 in our automation and control business.

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

[5] Segment liabilities included in total segment operating capital employed consist of trade and other accounts payable, advance payments and progress billings, accrued payroll and other liabilities.

[6] Corporate expense primarily includes corporate staff expenses.

[7] 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.

[8] Corporate includes cash, LIFO adjustments, deferred income tax balances, property, plant and equipment not associated with a specific segment, pension assets and the fair value of derivative financial instruments.