Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Revenue	$ 1,210.7	$ 596.0
Costs of sales and services	656.0	379.8
Gross margin	554.7	216.2
Costs and Expenses
Selling, general and administrative expenses	200.4	114.3
Research and development expenses	65.9	28.2
Restructuring and other charges (income)	(77.7)	8.3
Total costs and expenses	844.6	530.6
Income from continuing operations before equity in (earnings) loss of affiliates, non-operating pension and postretirement charges (income), interest expense, net and income taxes	366.1	65.4
Equity in (earnings) loss of affiliates	(0.1)	(0.1)
Pension and other postretirement benefits	0.5	(4.6)
Interest expense, net	33.9	15.7
Income (loss) from continuing operations before income taxes	331.8	54.4
Provision (benefit) for income taxes	68.7	9.4
Income (loss) from continuing operations	263.1	45.0
Discontinued operations, net of income taxes	6.5	(168.8)
Net income (loss)	269.6	(123.8)
Less: Net income (loss) attributable to noncontrolling interests	2.4	0.4
Net income (loss) attributable to FMC stockholders	267.2	(124.2)
Amounts attributable to FMC stockholders:
Continuing operations, net of income taxes	260.7	44.5
Discontinued operations, net of income taxes	6.5	(168.7)
Net income (loss) attributable to FMC stockholders	$ 267.2	$ (124.2)
Basic earnings (loss) per common share attributable to FMC stockholders:
Continuing operations (in USD per share)	$ 1.93	$ 0.33
Discontinued operations (in USD per share)	0.05	(1.26)
Net income (loss) attributable to FMC stockholders (in USD per share)	1.98	(0.93)
Diluted earnings (loss) per common share attributable to FMC stockholders:
Continuing operations (in USD per share)	1.91	0.33
Discontinued operations (in USD per share)	0.05	(1.25)
Net income (loss) attributable to FMC stockholders (in USD per share)	$ 1.96	$ (0.92)