Financial Information and Accounting Policies - Adjusted Income Statement and Comprehensive Income to Apply Adopted Guidance (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended |
Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021 |
Income Statement [Abstract] | | | | | | | | | | | | | | | |
Costs of sales and services | | $ 899.7 | | | | | | $ 682.5 | | | | | | $ 2,539.1 | $ 2,078.4 |
Gross margin | | 477.5 | | | | | | 511.5 | | | | | | 1,641.2 | 1,553.2 |
Total costs and expenses | | 1,166.6 | | | | | | 978.3 | | | | | | 3,430.5 | 2,869.1 |
Income from continuing operations before non-operating pension and postretirement charges (income), interest expense, net and income taxes | | 210.6 | | | | | | 215.7 | | | | | | 749.8 | 762.5 |
Non-operating pension and postretirement charges (income) | | (1.7) | | | | | | 1.5 | | | | | | 6.5 | 3.9 |
Income (loss) from continuing operations before income taxes | | 170.5 | | | | | | 181.1 | | | | | | 636.3 | 660.5 |
Provision (benefit) for income taxes | | 36 | | | | | | 9.2 | | | | | | 133 | 75.8 |
Income (loss) from continuing operations | | 134.5 | | | | | | 171.9 | | | | | | 503.3 | 584.7 |
Discontinued operations, net of income taxes | | (16.2) | | | | | | (9.7) | | | | | | (42.2) | (32.4) |
Net income (loss) | | 118.3 | | $ 131.2 | | $ 211.6 | | 162.2 | | $ 205 | | $ 185.1 | | 461.1 | 552.3 |
Net income (loss) attributable to FMC stockholders | | $ 121 | | | | | | $ 159.7 | | | | | | $ 462.6 | $ 548.9 |
Basic earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | $ 1.09 | | | | | | $ 1.32 | | | | | | $ 3.99 | $ 4.51 |
Net income (loss) attributable to FMC stockholders | | 0.96 | | | | | | 1.24 | | | | | | 3.66 | 4.26 |
Diluted earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | 1.08 | | | | | | 1.32 | | | | | | 3.98 | 4.48 |
Net income (loss) attributable to FMC stockholders (in USD per share) | | $ 0.95 | | | | | | $ 1.24 | | | | | | $ 3.65 | $ 4.23 |
Less: Net income (loss) attributable to noncontrolling interests | | $ (2.7) | | | | | | $ 2.5 | | | | | | $ (1.5) | $ 3.4 |
Net income (loss) attributable to FMC stockholders | | 121 | | | | | | 159.7 | | | | | | 462.6 | 548.9 |
Statement of Comprehensive Income [Abstract] | | | | | | | | | | | | | | | |
Net income (loss) | | 118.3 | | 131.2 | | 211.6 | | 162.2 | | 205 | | 185.1 | | 461.1 | 552.3 |
Pension and other postretirement benefits: | | | | | | | | | | | | | | | |
Unrealized actuarial gains (losses) and prior service (costs) credits, net of tax expense (benefit) | | (0.1) | | | | | | (0.7) | | | | | | (0.1) | (2.2) |
Reclassification of net actuarial and other (gain) loss and amortization of prior service costs, included in net income, net of tax (expense) benefit | [1] | 0 | | | | | | 2.5 | | | | | | 6.8 | 6.9 |
Total pension and other postretirement benefits, net of tax expense (benefit) of $1.2 as computed and zero as reported for the three months ended September 30, 2022 | | (0.1) | [2] | $ 3.2 | [2] | $ 3.6 | [2] | 1.8 | [3] | $ 1.5 | [3] | $ 1.4 | [3] | 6.7 | 4.7 |
Other comprehensive income (loss), net of tax | | (72.5) | | | | | | 17.2 | | | | | | (218.5) | (10.7) |
Comprehensive income (loss) | | 45.8 | | | | | | 179.4 | | | | | | 242.6 | 541.6 |
Comprehensive income (loss) attributable to FMC stockholders | | 49.2 | | | | | | 177.2 | | | | | | 246.1 | 538.4 |
Unrealized actuarial gains (losses) and prior service (costs) credits, tax | | 0 | | | | | | (0.2) | | | | | | 0 | (0.6) |
Reclassification of net actuarial and other (gain) loss and amortization of prior service costs, included in net income, tax | | 0 | | | | | | 0.7 | | | | | | 1.8 | 1.8 |
Total pension and other postretirement benefits, tax | | 0 | | | | | | (0.5) | | | | | | (1.8) | 1.2 |
As Previously Reported | | | | | | | | | | | | | | | |
Income Statement [Abstract] | | | | | | | | | | | | | | | |
Costs of sales and services | | | | | | | | 681.2 | | | | | | 2,539.1 | 2,074.6 |
Gross margin | | | | | | | | 512.8 | | | | | | 1,641.2 | 1,557 |
Total costs and expenses | | | | | | | | 977 | | | | | | 3,430.5 | 2,865.3 |
Income from continuing operations before non-operating pension and postretirement charges (income), interest expense, net and income taxes | | 210.6 | | | | | | 217 | | | | | | 749.8 | 766.3 |
Non-operating pension and postretirement charges (income) | | 3.9 | | | | | | 5.1 | | | | | | 12.1 | 14.7 |
Income (loss) from continuing operations before income taxes | | 164.9 | | | | | | 178.8 | | | | | | 630.7 | 653.5 |
Provision (benefit) for income taxes | | 34.8 | | | | | | 8.7 | | | | | | 131.8 | 74.3 |
Income (loss) from continuing operations | | 130.1 | | | | | | 170.1 | | | | | | 498.9 | 579.2 |
Net income (loss) | | 113.9 | | | | | | 160.4 | | | | | | 456.7 | 546.8 |
Net income (loss) attributable to FMC stockholders | | $ 116.6 | | | | | | $ 157.9 | | | | | | $ 458.2 | $ 543.4 |
Basic earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | $ 1.05 | | | | | | $ 1.30 | | | | | | $ 3.96 | $ 4.46 |
Net income (loss) attributable to FMC stockholders | | 0.92 | | | | | | 1.22 | | | | | | 3.63 | 4.21 |
Diluted earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | 1.05 | | | | | | 1.30 | | | | | | 3.94 | 4.44 |
Net income (loss) attributable to FMC stockholders (in USD per share) | | $ 0.92 | | | | | | $ 1.22 | | | | | | $ 3.61 | $ 4.19 |
Statement of Comprehensive Income [Abstract] | | | | | | | | | | | | | | | |
Net income (loss) | | $ 113.9 | | | | | | $ 160.4 | | | | | | $ 456.7 | $ 546.8 |
Pension and other postretirement benefits: | | | | | | | | | | | | | | | |
Unrealized actuarial gains (losses) and prior service (costs) credits, net of tax expense (benefit) | | (0.1) | | | | | | 0.1 | | | | | | (0.1) | 0 |
Reclassification of net actuarial and other (gain) loss and amortization of prior service costs, included in net income, net of tax (expense) benefit | | 4.4 | | | | | | 4.5 | | | | | | 11.2 | 13.2 |
Total pension and other postretirement benefits, net of tax expense (benefit) of $1.2 as computed and zero as reported for the three months ended September 30, 2022 | | 4.3 | | | | | | 4.6 | | | | | | 11.1 | 13.2 |
Other comprehensive income (loss), net of tax | | (68.1) | | | | | | 20 | | | | | | (214.1) | (2.2) |
Comprehensive income (loss) | | 45.8 | | | | | | 180.4 | | | | | | 242.6 | 544.6 |
Comprehensive income (loss) attributable to FMC stockholders | | 49.2 | | | | | | 178.2 | | | | | | 246.1 | 541.4 |
Unrealized actuarial gains (losses) and prior service (costs) credits, tax | | 0 | | | | | | 0 | | | | | | | 0 |
Reclassification of net actuarial and other (gain) loss and amortization of prior service costs, included in net income, tax | | 1.2 | | | | | | 1.2 | | | | | | 2.7 | 3.5 |
Total pension and other postretirement benefits, tax | | (1.2) | | | | | | (1.2) | | | | | | (2.7) | 3.5 |
Effect of Change | | | | | | | | | | | | | | | |
Income Statement [Abstract] | | | | | | | | | | | | | | | |
Costs of sales and services | | 0 | | | | | | | | | | | | 0 | |
Gross margin | | 0 | | | | | | | | | | | | 0 | |
Total costs and expenses | | 0 | | | | | | | | | | | | 0 | |
Income from continuing operations before non-operating pension and postretirement charges (income), interest expense, net and income taxes | | 0 | | | | | | | | | | | | 0 | |
Non-operating pension and postretirement charges (income) | | (5.6) | | | | | | | | | | | | (5.6) | |
Income (loss) from continuing operations before income taxes | | 5.6 | | | | | | | | | | | | 5.6 | |
Provision (benefit) for income taxes | | 1.2 | | | | | | | | | | | | 1.2 | |
Income (loss) from continuing operations | | 4.4 | | | | | | | | | | | | 4.4 | |
Net income (loss) | | 4.4 | | | | | | | | | | | | 4.4 | |
Net income (loss) attributable to FMC stockholders | | $ 4.4 | | | | | | | | | | | | $ 4.4 | |
Basic earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | $ 0.04 | | | | | | | | | | | | $ 0.03 | |
Net income (loss) attributable to FMC stockholders | | 0.04 | | | | | | | | | | | | 0.03 | |
Diluted earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | 0.03 | | | | | | | | | | | | 0.04 | |
Net income (loss) attributable to FMC stockholders (in USD per share) | | $ 0.03 | | | | | | | | | | | | $ 0.04 | |
Statement of Comprehensive Income [Abstract] | | | | | | | | | | | | | | | |
Net income (loss) | | $ 4.4 | | | | | | | | | | | | $ 4.4 | |
Pension and other postretirement benefits: | | | | | | | | | | | | | | | |
Unrealized actuarial gains (losses) and prior service (costs) credits, net of tax expense (benefit) | | 0 | | | | | | | | | | | | 0 | |
Reclassification of net actuarial and other (gain) loss and amortization of prior service costs, included in net income, net of tax (expense) benefit | | (4.4) | | | | | | | | | | | | (4.4) | |
Total pension and other postretirement benefits, net of tax expense (benefit) of $1.2 as computed and zero as reported for the three months ended September 30, 2022 | | (4.4) | | | | | | | | | | | | (4.4) | |
Other comprehensive income (loss), net of tax | | (4.4) | | | | | | | | | | | | (4.4) | |
Comprehensive income (loss) | | 0 | | | | | | | | | | | | 0 | |
Comprehensive income (loss) attributable to FMC stockholders | | $ 0 | | | | | | | | | | | | $ 0 | |
Effect of Change | Combined Effect of Changes | | | | | | | | | | | | | | | |
Income Statement [Abstract] | | | | | | | | | | | | | | | |
Costs of sales and services | | | | | | | | 1.3 | | | | | | | 3.8 |
Gross margin | | | | | | | | (1.3) | | | | | | | (3.8) |
Total costs and expenses | | | | | | | | 1.3 | | | | | | | 3.8 |
Income from continuing operations before non-operating pension and postretirement charges (income), interest expense, net and income taxes | | | | | | | | (1.3) | | | | | | | (3.8) |
Non-operating pension and postretirement charges (income) | | | | | | | | (3.6) | | | | | | | (10.8) |
Income (loss) from continuing operations before income taxes | | | | | | | | 2.3 | | | | | | | 7 |
Provision (benefit) for income taxes | | | | | | | | 0.5 | | | | | | | 1.5 |
Income (loss) from continuing operations | | | | | | | | 1.8 | | | | | | | 5.5 |
Net income (loss) | | | | | | | | 1.8 | | | | | | | 5.5 |
Net income (loss) attributable to FMC stockholders | | | | | | | | $ 1.8 | | | | | | | $ 5.5 |
Basic earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | | | | | | | $ 0.02 | | | | | | | $ 0.05 |
Net income (loss) attributable to FMC stockholders | | | | | | | | 0.02 | | | | | | | 0.05 |
Diluted earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | | | | | | | 0.02 | | | | | | | 0.04 |
Net income (loss) attributable to FMC stockholders (in USD per share) | | | | | | | | $ 0.02 | | | | | | | $ 0.04 |
Statement of Comprehensive Income [Abstract] | | | | | | | | | | | | | | | |
Net income (loss) | | | | | | | | $ 1.8 | | | | | | | $ 5.5 |
Pension and other postretirement benefits: | | | | | | | | | | | | | | | |
Unrealized actuarial gains (losses) and prior service (costs) credits, net of tax expense (benefit) | | | | | | | | (0.8) | | | | | | | (2.2) |
Reclassification of net actuarial and other (gain) loss and amortization of prior service costs, included in net income, net of tax (expense) benefit | | | | | | | | (2) | | | | | | | (6.3) |
Total pension and other postretirement benefits, net of tax expense (benefit) of $1.2 as computed and zero as reported for the three months ended September 30, 2022 | | | | | | | | (2.8) | | | | | | | (8.5) |
Other comprehensive income (loss), net of tax | | | | | | | | (2.8) | | | | | | | (8.5) |
Comprehensive income (loss) | | | | | | | | (1) | | | | | | | (3) |
Comprehensive income (loss) attributable to FMC stockholders | | | | | | | | (1) | | | | | | | (3) |
Effect of Change | Effect of FIFO Change | | | | | | | | | | | | | | | |
Income Statement [Abstract] | | | | | | | | | | | | | | | |
Costs of sales and services | | | | | | | | 1.3 | | | | | | | 3.8 |
Gross margin | | | | | | | | (1.3) | | | | | | | (3.8) |
Total costs and expenses | | | | | | | | 1.3 | | | | | | | 3.8 |
Income from continuing operations before non-operating pension and postretirement charges (income), interest expense, net and income taxes | | | | | | | | (1.3) | | | | | | | (3.8) |
Non-operating pension and postretirement charges (income) | | | | | | | | 0 | | | | | | | 0 |
Income (loss) from continuing operations before income taxes | | | | | | | | (1.3) | | | | | | | (3.8) |
Provision (benefit) for income taxes | | | | | | | | (0.3) | | | | | | | (0.8) |
Income (loss) from continuing operations | | | | | | | | (1) | | | | | | | (3) |
Net income (loss) | | | | | | | | (1) | | | | | | | (3) |
Net income (loss) attributable to FMC stockholders | | | | | | | | $ (1) | | | | | | | $ (3) |
Basic earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | | | | | | | $ 0 | | | | | | | $ (0.02) |
Net income (loss) attributable to FMC stockholders | | | | | | | | 0 | | | | | | | (0.02) |
Diluted earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | | | | | | | 0 | | | | | | | (0.03) |
Net income (loss) attributable to FMC stockholders (in USD per share) | | | | | | | | $ 0 | | | | | | | $ (0.03) |
Statement of Comprehensive Income [Abstract] | | | | | | | | | | | | | | | |
Net income (loss) | | | | | | | | $ (1) | | | | | | | $ (3) |
Pension and other postretirement benefits: | | | | | | | | | | | | | | | |
Unrealized actuarial gains (losses) and prior service (costs) credits, net of tax expense (benefit) | | | | | | | | 0 | | | | | | | 0 |
Reclassification of net actuarial and other (gain) loss and amortization of prior service costs, included in net income, net of tax (expense) benefit | | | | | | | | 0 | | | | | | | 0 |
Total pension and other postretirement benefits, net of tax expense (benefit) of $1.2 as computed and zero as reported for the three months ended September 30, 2022 | | | | | | | | 0 | | | | | | | 0 |
Other comprehensive income (loss), net of tax | | | | | | | | 0 | | | | | | | 0 |
Comprehensive income (loss) | | | | | | | | (1) | | | | | | | (3) |
Comprehensive income (loss) attributable to FMC stockholders | | | | | | | | (1) | | | | | | | (3) |
Effect of Change | Effect of Pension Change | | | | | | | | | | | | | | | |
Income Statement [Abstract] | | | | | | | | | | | | | | | |
Costs of sales and services | | | | | | | | 0 | | | | | | | 0 |
Gross margin | | | | | | | | 0 | | | | | | | 0 |
Total costs and expenses | | | | | | | | 0 | | | | | | | 0 |
Income from continuing operations before non-operating pension and postretirement charges (income), interest expense, net and income taxes | | | | | | | | 0 | | | | | | | 0 |
Non-operating pension and postretirement charges (income) | | | | | | | | (3.6) | | | | | | | (10.8) |
Income (loss) from continuing operations before income taxes | | | | | | | | 3.6 | | | | | | | 10.8 |
Provision (benefit) for income taxes | | | | | | | | 0.8 | | | | | | | 2.3 |
Income (loss) from continuing operations | | | | | | | | 2.8 | | | | | | | 8.5 |
Net income (loss) | | | | | | | | 2.8 | | | | | | | 8.5 |
Net income (loss) attributable to FMC stockholders | | | | | | | | $ 2.8 | | | | | | | $ 8.5 |
Basic earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | | | | | | | $ 0.02 | | | | | | | $ 0.07 |
Net income (loss) attributable to FMC stockholders | | | | | | | | 0.02 | | | | | | | 0.07 |
Diluted earnings (loss) per common share attributable to FMC stockholders: | | | | | | | | | | | | | | | |
Continuing operations (in USD per share) | | | | | | | | 0.02 | | | | | | | 0.07 |
Net income (loss) attributable to FMC stockholders (in USD per share) | | | | | | | | $ 0.02 | | | | | | | $ 0.07 |
Statement of Comprehensive Income [Abstract] | | | | | | | | | | | | | | | |
Net income (loss) | | | | | | | | $ 2.8 | | | | | | | $ 8.5 |
Pension and other postretirement benefits: | | | | | | | | | | | | | | | |
Unrealized actuarial gains (losses) and prior service (costs) credits, net of tax expense (benefit) | | | | | | | | (0.8) | | | | | | | (2.2) |
Reclassification of net actuarial and other (gain) loss and amortization of prior service costs, included in net income, net of tax (expense) benefit | | | | | | | | (2) | | | | | | | (6.3) |
Total pension and other postretirement benefits, net of tax expense (benefit) of $1.2 as computed and zero as reported for the three months ended September 30, 2022 | | | | | | | | (2.8) | | | | | | | (8.5) |
Other comprehensive income (loss), net of tax | | | | | | | | (2.8) | | | | | | | (8.5) |
Comprehensive income (loss) | | | | | | | | 0 | | | | | | | 0 |
Comprehensive income (loss) attributable to FMC stockholders | | | | | | | | $ 0 | | | | | | | $ 0 |
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[1]For more detail on the components of these reclassifications and the affected line item in the condensed consolidated statements of income (loss) see Note 14.[2]See condensed consolidated statements of comprehensive income (loss).[3]See condensed consolidated statements of comprehensive income (loss). | |