Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Intangible assets subject to amortization (finite-lived)
Gross	$ 472.0	$ 472.0	$ 435.9
Accumulated Amortization	(98.4)	(98.4)	(80.8)
Finite-lived intangible assets, net	373.6	373.6	355.1
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	403.0	403.0	364.8
Intangible assets net	776.6	776.6	719.9
Finite and Indefinite lived intangible assets, gross	875.0	875.0	800.7
Customer relationships
Intangible assets subject to amortization (finite-lived)
Gross	394.2	394.2	356.9
Accumulated Amortization	(61.5)	(61.5)	(43.7)
Finite-lived intangible assets, net	332.7	332.7	313.2
Patents
Intangible assets subject to amortization (finite-lived)
Gross	2.5	2.5	2.2
Accumulated Amortization	(0.9)	(0.9)	(0.4)
Finite-lived intangible assets, net	1.6	1.6	1.8
Brands
Intangible assets subject to amortization (finite-lived)
Gross	15.4	15.4	13.6
Accumulated Amortization	(5.9)	(5.9)	(4.7)
Finite-lived intangible assets, net	9.5	9.5	8.9
Purchased and licensed technologies
Intangible assets subject to amortization (finite-lived)
Gross	57.0	57.0	60.3
Accumulated Amortization	(28.1)	(28.1)	(30.1)
Finite-lived intangible assets, net	28.9	28.9	30.2
Other intangibles
Intangible assets subject to amortization (finite-lived)
Gross	2.9	2.9	2.9
Accumulated Amortization	(2.0)	(2.0)	(1.9)
Finite-lived intangible assets, net	0.9	0.9	1.0
Brands
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	402.3	402.3	363.4
In-process research & development
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	0.7	0.7	1.4
Impairment charge	0.9
FMC Agricultural Solutions
Intangible assets subject to amortization (finite-lived)
Finite-lived intangible assets, net	372.6	372.6
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	403.0	403.0
Impairment charge		1.3	$ 1.0
FMC Agricultural Solutions \| Brands \| Generic brand portfolio
Intangible assets not subject to amortization (indefinite-lived)
Indefinite-lived intangible assets	4.3	$ 4.3
Impairment charge	$ 1.3

Finite and Indefinite lived intangible assets, gross

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 350
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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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