The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Goodwill and Intangible Assets - Intangibles by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Finite-lived	$ 369.2		$ 369.2		$ 355.1
Indefinite-lived	394.4		394.4		$ 364.8
Amortization expense	5.2	$ 6.1	10.3	$ 12.0
Amortization expense, 2017	22.1		22.1
Amortization expense, 2018	22.0		22.0
Amortization expense, 2019	21.8		21.8
Amortization expense, 2020	21.7		21.7
Amortization expense, 2021	20.8		20.8
FMC Agricultural Solutions
Segment Reporting Information [Line Items]
Finite-lived	368.2		368.2
Indefinite-lived	394.4		394.4
FMC Lithium
Segment Reporting Information [Line Items]
Finite-lived	1.0		1.0
Indefinite-lived	$ 0.0		$ 0.0