Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Merger of FMC Technologies and Technip (Goodwill Allocation) (Details) - USD ($) $ in Millions	Sep. 30, 2017	Jan. 16, 2017	Dec. 31, 2016
Business Acquisition
Goodwill	$ 8,896.0		$ 3,718.3
FMCTI Merger
Business Acquisition
Goodwill		$ 5,121.1
FMCTI Merger \| Subsea
Business Acquisition
Goodwill		2,508.2
FMCTI Merger \| Onshore/Offshore
Business Acquisition
Goodwill		1,622.9
FMCTI Merger \| Surface Technologies
Business Acquisition
Goodwill		$ 990.0