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Employee Benefit Plans - Narrative (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($) plan | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Manitowoc Deferred Compensation Plan |  |  |
Number of defined contribution retirement plans for the employees | plan | 3 |  |
Amortization of gains and losses in excess of specified percentage (as a percent) | 10.00% |  |
Expenses related to the target benefit plan | $ 1.2 | $ 3.2 | $ 2.9
Amounts accrued related to the target benefit plan | 15.1 | 21.4 |
U.S. Pension Plans |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Funded status | (46.1) | (47.0) |
Estimated future employer contributions | 6.1 |  |
Accumulated benefit obligation | 162.3 | 155.6 |
Non-US Pension Plans |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Funded status | (44.4) | (41.0) |
Estimated future employer contributions | 2.5 |  |
Accumulated benefit obligation | $ 82.1 | 76.2 |
Minimum | Equity Securities |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Target Allocations (as a percent) | 25.00% |  |
Minimum | Debt Securities |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Target Allocations (as a percent) | 50.00% |  |
Maximum | Equity Securities |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Target Allocations (as a percent) | 50.00% |  |
Maximum | Debt Securities |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Target Allocations (as a percent) | 75.00% |  |
Pension Plans |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Amounts in accumulated other comprehensive income that are expected to be recognized as components of net periodic benefit cost during the next fiscal year | $ (4.9) |  |
Postretirement Health and Other |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Funded status | (28.9) | (41.6) |
Amounts in accumulated other comprehensive income that are expected to be recognized as components of net periodic benefit cost during the next fiscal year | $ 1.0 |  |
Annual rate of increase in the per capita cost of covered health care benefits assumed for measurement purposes (as a percent) | 6.20% |  |
Ultimate health care cost trend rate (as a percent) | 4.50% |  |
Estimated future employer contributions | $ 3.5 |  |
Manitowoc Food Service | Pension Plans |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Funded status |  |  | 32.5
Retirement Savings Plan |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Total costs incurred under the Manitowoc Retirement Savings Plan | $ 1.5 | 1.9 | $ 3.2
Deferred Compensation Plan |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Number of investment programs | plan | 2 |  |
Number of deferred compensation plans | plan | 2 |  |
Deferred Compensation Plan | Program A |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Program asset | $ 0.0 | 0.0 |
Program obligation | 0.0 | 0.0 |
Deferred Compensation Plan | Program B |  |  |
Manitowoc Deferred Compensation Plan |  |  |
Program asset | 10.6 | 11.3 |
Program obligation | $ 10.6 | $ 11.3 |

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