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Employee Benefit Plans - Narrative (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) Employee | Dec. 31, 2020 USD ($) plan | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Manitowoc Deferred Compensation Plan |  |  |  |
Total cost incurred under defined contribution plan |  | $ 5.9 | $ 6.3 | $ 6.2
Defined contribution plan, Plan name |  | Manitowoc 401(k) Retirement Plan | Manitowoc 401(k) Retirement Plan | Manitowoc 401(k) Retirement Plan
Other income (expense) - net |  | $ (10.0) | $ 9.8 | $ (11.5)
Amortization of gains and losses in excess of specified percentage (as a percent) |  | 10.00% |  |
Postretirement Medical and Other |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Annual rate of increase in the per capita cost of covered health care benefits assumed for measurement purposes (as a percent) |  | 5.48% |  |
Ultimate health care cost trend rate (as a percent) |  | 4.50% |  |
Estimated future employer contributions |  | $ 1.9 |  |
Supplemental Executive Retirement Plan |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Final benefit payments |  |  | 2.5 |
Expenses related to retirement plan |  | $ 0.0 | 0.2 | 1.2
Pension Settlement Charge | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Other income (expense) - net |  |  |  | (4.5)
Deferred Compensation Plan |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Number of investment programs | plan |  | 2 |  |
Deferred Compensation Plan | Program A |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Program asset |  | $ 0.6 | 0.5 |
Program obligation |  | 0.6 | 0.5 |
Deferred Compensation Plan | Program B |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Total cost incurred under defined contribution plan |  | 0.4 | 0.5 | 0.3
Program asset |  | 9.0 | 8.4 |
Program obligation |  | $ 9.0 | 8.4 |
U.S. Pension Plans |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Number of defined contribution retirement plans for the employees | plan |  | 2 |  |
Defined benefit plan obligation transfer | $ 18.6 |  |  |
Number of retirees and beneficiaries | Employee | 622 |  |  |
Estimated future employer contributions |  | $ 5.8 |  |
U.S. Pension Plans | Pension Settlement Charge | Reclassification out of Accumulated Other Comprehensive Income |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Other income (expense) - net | $ 4.5 |  |  |
Non-U.S. Pension Plans |  |  |  |
Manitowoc Deferred Compensation Plan |  |  |  |
Total cost incurred under defined contribution plan |  | 1.7 | $ 1.2 | $ 1.3
Estimated future employer contributions |  | $ 3.0 |  |

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