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Pensions and Other Postretirement Benefits Narrative (Details) - USD ($) $ in Millions | 2 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Settlements |  |  | $ (35.7) |
Company contributions |  | $ 37.5 | 55.4 |
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% | 5.00% |  |
Charges for defined contribution plans |  | $ 15.0 | 9.7 | $ 7.6
Non-U.S. |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Settlements |  |  | (32.5) |
UNITED STATES |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Settlements |  |  | $ (3.2) |
Expected return on plan assets | 4.50% | 5.00% | 6.50% | 7.00%
Decrease in rate of return on plan assets |  | 1.50% |  |
Estimated inflation rate assumptions for rate of return on plan assets |  | 2.30% |  |
Pension Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Accumulated benefit obligation | $ 1,248.8 | $ 1,248.8 | $ 1,359.6 |
Net actuarial (gain) loss that will be amortized from AOCI into net annual benefit cost (income) during 2014 | 18.4 | 18.4 |  |
Prior service cost (credit) that will be amortized from AOCI into net annual benefit cost (income) during 2014 | 0.2 | 0.2 |  |
Loss due to curtailment and special termination benefits |  | 4.3 | 4.3 |
Settlements |  | $ (4.4) | $ (6.9) |
Expected return on plan assets |  | 5.00% | 6.50% | 7.00%
Company contributions |  | $ 36.0 | $ 53.5 |
Remaining pension obligation | 1,269.7 | 1,269.7 | 1,339.9 | $ 1,208.2
Settlement charge |  | (1.8) | (3.2) | $ (20.3)
Pension Plan | UNITED STATES |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Voluntary cash contributions | 7.0 | 7.0 |  |
Other Benefits |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Net actuarial (gain) loss that will be amortized from AOCI into net annual benefit cost (income) during 2014 | (0.7) | (0.7) |  |
Prior service cost (credit) that will be amortized from AOCI into net annual benefit cost (income) during 2014 | 0.1 | 0.1 |  |
Settlements |  | $ 0.0 | $ 0.0 |
Expected return on plan assets |  | 0.00% | 0.00% | 0.00%
Company contributions |  | $ 1.5 | $ 2.0 |
Remaining pension obligation | $ 0.0 | 0.0 | 0.0 | $ 0.0
Settlement charge |  | $ 0.0 | 0.0 | $ 0.0
Discontinued Operations, Held-for-sale | FMC Health and Nutrition |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Pension curtailment charge |  |  | 3.9 |
Fixed Income Investments | UNITED STATES |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Target asset allocation | 100.00% | 100.00% |  |
Fair Value, Inputs, Level 3 | Pension Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Remaining pension obligation | $ 0.0 | $ 0.0 | $ 0.0 |

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