Merger of FMC Technologies and Technip (Narrative) (Detail) - USD ($) $ in Millions			2 Months Ended	3 Months Ended
		Jan. 16, 2017	Mar. 31, 2017	Mar. 31, 2017
Business Acquisition
Merger transaction and integration costs				$ 54.7
FMC Technologies
Business Acquisition
Percentage of business acquired		100.00%
FMCTI Merger
Business Acquisition
FMC Technologies Inc. exchange ratio	[1]	0.5
Merger transaction and integration costs				$ 54.7
Revenues contributed			$ 739.4
Operating loss contributed			$ (80.9)
FMC Technologies
Business Acquisition
FMC Technologies Inc. exchange ratio		1.0
Technip
Business Acquisition
FMC Technologies Inc. exchange ratio		2.0

[1] As the calculation is deemed to reflect a share capital increase of the accounting acquirer, the FMC Technologies, Inc. exchange ratio (1 share of TechnipFMC for 1 share of FMC Technologies, Inc. as provided in the business combination agreement) is adjusted by dividing the FMC Technologies exchange ratio by the Technip exchange ratio (2 shares of TechnipFMC for 1 share of Technip as provided in the business combination agreement), i.e., 1/2 = 0.5 in order to reflect the number of shares of Technip that FMC Technologies stockholders would have received if Technip was to have issued its own shares.