Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Change in fair value of plan assets [Abstract]
Company contributions			$ 56.5	$ 65.7
Settlements			(35.7)
Amount recognized in the consolidated balance sheets [Abstract]
Decrease in benefit obligation for change in projections			9.0
Other changes in plan assets and benefit obligations for continuing operations recognized in other comprehensive loss (income) [Abstract]
Total recognized in other comprehensive (income) loss, after taxes			$ (52.2)	$ (12.3)	$ (17.7)
Components of net annual benefit cost [Abstract]
Average remaining service period of participants			19 years	8 years
Defined contribution plan [Abstract]
Employer matching contribution percentage			80.00%
Maximum percentage of employee's compensation eligible for employer matching contributions			5.00%
Additional employer annual contribution percentage			5.00%
Charges for defined contribution plans			$ 9.7	$ 7.7	7.7
Pension Plan [Member]
Following are the weighted average assumptions used to determine the benefit obligations [Abstract]
Discount rate			3.68%	4.22%
Rate of compensation increase			3.10%	3.60%
Change in projected benefit obligation [Abstract]
Projected benefit obligation at January 1		$ 1,385.8	$ 1,378.7	$ 1,411.6
Service cost			7.3	8.0	11.9
Interest cost			44.8	49.8	59.6
Actuarial loss (gain)			82.2	61.9
Amendments			0.0	0.6
Acquisitions			7.6	0.0
Foreign currency exchange rate changes			3.4	(7.9)
Plan participants’ contributions			0.0	0.0
Special termination benefits			2.3	0.0
Settlements			(54.3)	(62.7)
Transfer of liabilities from continuing to discontinued operations			0.0	0.0
Curtailments			(5.0)	0.0
Benefits paid			(81.2)	(82.6)
Projected benefit obligation at December 31			1,385.8	1,378.7	1,411.6
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		1,339.9	1,253.5	1,233.2
Actual return on plan assets			165.2	104.2
Foreign currency exchange rate changes			3.2	(2.8)
Company contributions			54.5	64.2
Plan participants’ contributions			0.0	0.0
Actual expenses			(1.0)	0.0
Settlements			(54.3)	(62.7)
Other			0.0	0.0
Benefits paid			(81.2)	(82.6)
Fair value of plan assets at December 31			1,339.9	1,253.5	$ 1,233.2
Funded status of the plan (liability)			(45.9)	(125.2)
Amount recognized in the consolidated balance sheets [Abstract]
Accrued benefit liability			(45.9)	(125.2)
Total			(45.9)	(125.2)
The amounts in accumulated other comprehensive income (loss) that has not yet been recognized as components of net periodic benefit cost [Abstract]
Prior service (cost) credit			(1.9)	(3.5)
Net actuarial (loss) gain			(398.3)	(468.1)
Accumulated other comprehensive income (loss) – pretax			(400.2)	(471.6)
Accumulated other comprehensive income (loss) – net of tax			(248.4)	(300.6)
Accumulated benefit obligation			1,359.6	1,367.4
Other changes in plan assets and benefit obligations for continuing operations recognized in other comprehensive loss (income) [Abstract]
Current year net actuarial loss (gain)			(2.6)	40.5
Current year prior service cost (credit)			0.0	0.2
Amortization of net actuarial (loss) gain			(16.4)	(39.8)
Amortization of prior service (cost) credit			(0.5)	(0.7)
Amortization of transition obligation			0.0	0.0
Recognition of prior service cost due to curtailment			0.0	0.0
Transfer of actuarial (loss) gain from continuing to discontinued operations			0.0	0.0
Curtailment (loss)			(5.0)	0.4
Settlement (loss)			(47.3)	(21.0)
Foreign currency exchange rate changes on the above line items			0.4	(7.1)
Total recognized in other comprehensive (income) loss, before taxes			(71.4)	(27.5)
Total recognized in other comprehensive (income) loss, after taxes			(52.2)	$ (13.4)
Estimated amounts that will be amortized from AOCI during next fiscal year [Abstract]
Net actuarial (gain) loss that will be amortized from AOCI into net annual benefit cost (income) during 2014			13.2
Prior service cost (credit) that will be amortized from AOCI into net annual benefit cost (income) during 2014			$ 0.4
Assumptions used in calculating net periodic benefit cost (income) [Abstract]
Discount rate			4.22%	4.50%	4.15%
Expected return on plan assets			6.50%	7.00%	7.25%
Rate of compensation increase			3.60%	3.60%	3.60%
Components of net annual benefit cost [Abstract]
Service cost			$ 7.3	$ 8.0	$ 11.9
Interest cost			44.8	49.8	59.6
Expected return on plan assets			(78.5)	(85.5)	(86.2)
Amortization of prior service cost			0.5	0.7	0.9
Amortization of net actuarial and other (gain) loss			16.4	39.2	54.3
Recognized (gain) loss due to curtailments			0.0	0.0	4.8
Recognized (gain) loss due to settlement			35.7	20.3	2.6
Net annual benefit cost			26.2	32.5	$ 47.9
Estimated Net Future Benefit Payments [Abstract]
2018			85.9
2019			86.4
2020			85.5
2021			85.1
2022			86.0
2023 – 2027			415.2
Pension Plan [Member] | Fair Value, Measurements, Recurring [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		1,339.9	1,253.5
Fair value of plan assets at December 31			1,339.9	1,253.5
Pension Plan [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		1,150.0	975.9
Fair value of plan assets at December 31			1,150.0	975.9
Pension Plan [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		150.8	153.2
Fair value of plan assets at December 31			150.8	153.2
Pension Plan [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	45.6
Fair value of plan assets at December 31			0.0	45.6
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		194.1	692.0
Fair value of plan assets at December 31			194.1	692.0
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		194.1	692.0
Fair value of plan assets at December 31			194.1	692.0
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Common Stock [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		27.3	154.6
Fair value of plan assets at December 31			27.3	154.6
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		27.3	154.6
Fair value of plan assets at December 31			27.3	154.6
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		45.0
Fair value of plan assets at December 31			45.0
Components of net annual benefit cost [Abstract]
Recognized (gain) loss due to settlement	$ 32.5
Pension Plan [Member] | Fixed Income Investments [Member] | Investment Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	45.6
Settlements			(45.6)
Fair value of plan assets at December 31			0.0	45.6
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Measurements, Recurring [Member] | Investment Contracts [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		150.8	198.8
Fair value of plan assets at December 31			150.8	198.8
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Measurements, Recurring [Member] | Investment Contracts [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Measurements, Recurring [Member] | Investment Contracts [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		150.8	153.2
Fair value of plan assets at December 31			150.8	153.2
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Measurements, Recurring [Member] | Investment Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	45.6
Fair value of plan assets at December 31			0.0	45.6
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		805.6	11.2
Fair value of plan assets at December 31			805.6	11.2
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		805.6	11.2
Fair value of plan assets at December 31			805.6	11.2
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Fixed Income Investments [Member] | Fair Value, Measurements, Recurring [Member] | Mutual Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Cash and Short-term Investments [Member] | Fair Value, Measurements, Recurring [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		123.0	118.6
Fair value of plan assets at December 31			123.0	118.6
Pension Plan [Member] | Cash and Short-term Investments [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		123.0	118.6
Fair value of plan assets at December 31			123.0	118.6
Pension Plan [Member] | Cash and Short-term Investments [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Cash and Short-term Investments [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0
Fair value of plan assets at December 31			0.0	0.0
Pension Plan [Member] | Other Investments [Member] | Fair Value, Measurements, Recurring [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1			(0.5)
Fair value of plan assets at December 31				(0.5)
Pension Plan [Member] | Other Investments [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1			(0.5)
Fair value of plan assets at December 31				(0.5)
Pension Plan [Member] | Other Investments [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1			0.0
Fair value of plan assets at December 31				0.0
Pension Plan [Member] | Other Investments [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1			0.0
Fair value of plan assets at December 31				0.0
Pension Plan [Member] | Investments Measured at Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member]
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		39.1	78.8
Fair value of plan assets at December 31			$ 39.1	78.8
Qualified Plan [Member]
Components of net annual benefit cost [Abstract]
Percentage of inactive participants			95.00%
Postretirement Life Plan [Member]
Components of net annual benefit cost [Abstract]
Percentage of inactive participants			93.00%
Pension Plan,U.S. Plans with Assets [Member]
Change in fair value of plan assets [Abstract]
Funded status of the plan (liability)			$ (6.6)	(88.3)
Pension Plan, U.S.Plans without Assets [Member]
Change in fair value of plan assets [Abstract]
Funded status of the plan (liability)			(29.8)	(33.3)
Pension Plan, Non-U.S. Plans With Assets [Member]
Change in fair value of plan assets [Abstract]
Funded status of the plan (liability)			(7.6)	(0.7)
U.S. Defined Benefit Pension Plan [Member]
Change in fair value of plan assets [Abstract]
Company contributions			44.0	$ 35.0
Settlements			$ (3.2)
Assumptions used in calculating net periodic benefit cost (income) [Abstract]
Expected return on plan assets			6.50%	7.00%	7.25%
Components of net annual benefit cost [Abstract]
Expected long-term rate of return decrease			0.50%
Historical compound annual rate of return of plan's trust over the last 20 years			7.90%
Estimated inflation rate assumptions for rate of return on plan assets			2.30%
Pension and Other Postretirement Benefit Contributions [Abstract]
Expected total voluntary cash contributions to U.S. defined benefit pension plan for 2014			$ 30.0
U.S. Defined Benefit Pension Plan [Member] | Equity Securities [Member]
Target plan asset allocations [Abstract]
Target asset allocation			20.00%
U.S. Defined Benefit Pension Plan [Member] | Equity Securities [Member] | Minimum [Member]
Assumptions used in calculating net periodic benefit cost (income) [Abstract]
Expected return on plan assets			6.30%
U.S. Defined Benefit Pension Plan [Member] | Equity Securities [Member] | Maximum [Member]
Assumptions used in calculating net periodic benefit cost (income) [Abstract]
Expected return on plan assets			7.70%
U.S. Defined Benefit Pension Plan [Member] | Fixed Income Investments [Member]
Target plan asset allocations [Abstract]
Target asset allocation			80.00%
U.S. Defined Benefit Pension Plan [Member] | Fixed Income Investments [Member] | Minimum [Member]
Assumptions used in calculating net periodic benefit cost (income) [Abstract]
Expected return on plan assets			4.20%
U.S. Defined Benefit Pension Plan [Member] | Fixed Income Investments [Member] | Maximum [Member]
Assumptions used in calculating net periodic benefit cost (income) [Abstract]
Expected return on plan assets			4.80%
Foreign Pension Plan [Member]
Change in fair value of plan assets [Abstract]
Company contributions			$ 1.1	$ 24.3
Settlements			(32.5)
Foreign Pension Plan [Member] | U.K. [Member]
Change in fair value of plan assets [Abstract]
Company contributions			21.0
Other Postretirement Benefit Plan [Member]
Change in projected benefit obligation [Abstract]
Projected benefit obligation at January 1		19.0	19.2	20.0
Service cost			0.0	0.0	$ 0.0
Interest cost			0.7	0.8	0.9
Actuarial loss (gain)			1.7	0.0
Amendments			(0.1)	0.0
Acquisitions			0.0	0.0
Foreign currency exchange rate changes			0.0	0.0
Plan participants’ contributions			0.7	0.7
Special termination benefits			0.0	0.0
Settlements			0.0	0.0
Transfer of liabilities from continuing to discontinued operations			(0.9)	0.0
Curtailments			0.4	0.0
Benefits paid			(2.7)	(2.3)
Projected benefit obligation at December 31			19.0	19.2	20.0
Change in fair value of plan assets [Abstract]
Fair value of plan assets at January 1		0.0	0.0	0.0
Actual return on plan assets			0.0	0.0
Foreign currency exchange rate changes			0.0	0.0
Company contributions			2.0	1.6
Plan participants’ contributions			0.7	0.7
Actual expenses			0.0	0.0
Settlements			0.0	0.0
Other			0.0	0.0
Benefits paid			(2.7)	(2.3)
Fair value of plan assets at December 31			0.0	0.0	$ 0.0
Funded status of the plan (liability)			(19.0)	(19.2)
Amount recognized in the consolidated balance sheets [Abstract]
Accrued benefit liability			(19.0)	(19.2)
Total			(19.0)	(19.2)
The amounts in accumulated other comprehensive income (loss) that has not yet been recognized as components of net periodic benefit cost [Abstract]
Prior service (cost) credit			(0.2)	(0.5)
Net actuarial (loss) gain			5.5	9.2
Accumulated other comprehensive income (loss) – pretax			5.3	8.7
Accumulated other comprehensive income (loss) – net of tax			3.5	5.6
Other changes in plan assets and benefit obligations for continuing operations recognized in other comprehensive loss (income) [Abstract]
Current year net actuarial loss (gain)			2.1	0.0
Current year prior service cost (credit)			(0.1)	0.0
Amortization of net actuarial (loss) gain			1.0	1.1
Amortization of prior service (cost) credit			0.1	0.0
Amortization of transition obligation				0.0
Recognition of prior service cost due to curtailment			(0.3)	0.0
Transfer of actuarial (loss) gain from continuing to discontinued operations			0.6	0.0
Curtailment (loss)			0.0	0.0
Settlement (loss)			0.0	0.0
Foreign currency exchange rate changes on the above line items			0.0	0.0
Total recognized in other comprehensive (income) loss, before taxes			3.4	1.1
Total recognized in other comprehensive (income) loss, after taxes			2.1	$ 0.5
Estimated amounts that will be amortized from AOCI during next fiscal year [Abstract]
Net actuarial (gain) loss that will be amortized from AOCI into net annual benefit cost (income) during 2014			(0.7)
Prior service cost (credit) that will be amortized from AOCI into net annual benefit cost (income) during 2014			$ (0.1)
Assumptions used in calculating net periodic benefit cost (income) [Abstract]
Discount rate			3.77%	3.97%	4.15%
Expected return on plan assets			0.00%	0.00%	0.00%
Rate of compensation increase			0.00%	0.00%	0.00%
Components of net annual benefit cost [Abstract]
Service cost			$ 0.0	$ 0.0	$ 0.0
Interest cost			0.7	0.8	0.9
Expected return on plan assets			0.0	0.0	0.0
Amortization of prior service cost			(0.1)	0.0	0.1
Amortization of net actuarial and other (gain) loss			(0.9)	(1.2)	(1.2)
Recognized (gain) loss due to curtailments			0.0	0.0	0.5
Recognized (gain) loss due to settlement			0.0	0.0	0.0
Net annual benefit cost			(0.3)	(0.4)	$ 0.3
Estimated Net Future Benefit Payments [Abstract]
2018			1.9
2019			1.9
2020			1.8
2021			1.7
2022			1.7
2023 – 2027			6.9
Other Postretirement Benefit Plan, U.S. Plan with Assets [Member]
Change in fair value of plan assets [Abstract]
Funded status of the plan (liability)			0.0	0.0
Other Postretirement Benefit Plan, U.S. Plans without Assets [Member]
Change in fair value of plan assets [Abstract]
Funded status of the plan (liability)			(19.0)	(19.2)
Other Postretirement Benefit Plan, Non-U.S. Plans with Assets [Member]
Change in fair value of plan assets [Abstract]
Funded status of the plan (liability)			$ 0.0	$ 0.0
Other Pension Plan [Member]
Following are the weighted average assumptions used to determine the benefit obligations [Abstract]
Discount rate			3.29%	3.55%
Change in fair value of plan assets [Abstract]
Company contributions			$ 9.4	$ 4.8
Funded status of the plan (liability)			$ (1.9)	$ (2.9)
Other Postretirement Benefit Plan, All Other Plans [Member]
Following are the weighted average assumptions used to determine the benefit obligations [Abstract]
Discount rate			3.41%	3.77%
Change in fair value of plan assets [Abstract]
Funded status of the plan (liability)			$ 0.0	$ 0.0
Change in Assumptions for Defined Benefit Plans [Member] | Pension Plan [Member] | Minimum [Member] | Scenario, Forecast [Member]
Components of net annual benefit cost [Abstract]
Net annual benefit cost		$ 20.0
FMC Health and Nutrition [Member] | Discontinued Operations, Held-for-sale [Member]
Components of net annual benefit cost [Abstract]
Recognized (gain) loss due to curtailments			$ 3.9