Merger of FMC Technologies and Technip (Identifiable Intangible Assets Acquired) (Details) - FMCTI Merger $ in Millions	Jan. 16, 2017 USD ($)
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 1,390.3
Technology-Based Intangible Assets
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 240.0
Estimated Useful Lives	10 years
Order or Production Backlog
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 175.0
Estimated Useful Lives	2 years
Customer Relationships
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 285.0
Estimated Useful Lives	10 years
Trade Names
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 635.0
Estimated Useful Lives	20 years
Computer Software, Intangible Asset
Acquired Finite-Lived Intangible Assets
Total identifiable intangible assets acquired	$ 55.3