Discontinued Operations - Results of Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Results of discontinued FMC operations:
Discontinued operations of FMC Lithium, net of income taxes	$ (10.8)	$ (18.1)	$ (18.3)	$ (8.5)
FMC Lithium
Results of discontinued FMC operations:
Discontinued operations of FMC Lithium, net of income taxes	0.0	(8.6)	1.0	(18.6)
FMC Lithium \| Discontinued Operations, Disposed of by Sale
Results of discontinued FMC operations:
Revenue	0.0	0.0	0.0	52.1
Costs of sales and services	0.0	0.0	0.0	41.3
Income (loss) from discontinued operations before income taxes	0.0	0.0	0.0	1.1
Provision (benefit) for income taxes	0.0	0.0	0.0	6.0
Total discontinued operations of FMC Lithium, net of income taxes, before separation-related costs and other adjustments	0.0	0.0	0.0	(4.9)
Separation-related costs and other adjustments of discontinued operations of FMC Lithium, net of income taxes	0.0	(8.6)	1.0	(13.7)
Discontinued operations of FMC Lithium, net of income taxes	$ 0.0	$ (8.6)	$ 1.0	$ (18.6)

Disposal Group, Including Discontinued Operation, Separation-Related Costs And Other Adjustments

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Income (Loss) from Discontinued Operations, Net of Tax, Before Divestiture Related Costs and Adjustments

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Amount before tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until its disposal.

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Amount of tax expense (benefit) attributable to income (loss) from operations classified as a discontinued operation. Excludes tax expense (benefit) for gain (loss) on disposal and for provision for gain (loss) until disposal.

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