Business Segment Information (Segment Operating Capital Employed And Segment Assets) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Total assets	$ 6,424.9		$ 5,902.9
Operating segments [Member]
Segment Reporting Information [Line Items]
Total segment operating capital employed	3,721.4	[1]	3,572.6	[1]
Total assets	5,795.7		5,396.8
Operating segments [Member] | Subsea Technologies [Member]
Segment Reporting Information [Line Items]
Total segment operating capital employed	2,163.6	[1]	2,050.7	[1]
Total assets	3,826.9		3,452.3
Operating segments [Member] | Surface Technologies [Member]
Segment Reporting Information [Line Items]
Total segment operating capital employed	1,203.7	[1]	1,185.3	[1]
Total assets	1,504.3		1,487.9
Operating segments [Member] | Energy Infrastructure [Member]
Segment Reporting Information [Line Items]
Total segment operating capital employed	354.1	[1]	336.6	[1]
Total assets	489.8		474.8
Segment reconciling items [Member]
Segment Reporting Information [Line Items]
Segment liabilities included in total segment operating capital employed	2,074.3	[2]	1,824.2	[2]
Intercompany eliminations [Member]
Segment Reporting Information [Line Items]
Total assets	(25.3)		(18.2)
Corporate [Member]
Segment Reporting Information [Line Items]
Total assets	$ 629.2	[3]	$ 506.1	[3]

[1] 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.

[2] 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.

[3] 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.