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Employee Benefit Plans - Narrative (Details)
$ in Millions
 1 Months Ended 12 Months Ended
Sep. 30, 2018
USD ($)
Employee
Dec. 31, 2019
USD ($)
plan
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Manitowoc Deferred Compensation Plan        
Total cost incurred under defined contribution plan   $ 6.3 $ 6.2 $ 4.9
Defined Contribution Plan, Plan Name   Manitowoc 401(k) Retirement Plan Manitowoc 401(k) Retirement Plan Manitowoc 401(k) Retirement Plan
Other income (expense) - net   $ 9.8 $ (11.5) $ (6.8)
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)   5.72%    
Ultimate health care cost trend rate (as a percent)   4.50%    
Estimated future employer contributions   $ 2.1    
Final benefit payments   0.0 0.0  
Supplemental Executive Retirement Plan        
Manitowoc Deferred Compensation Plan        
Final benefit payments   $ 2.5    
Expenses related to retirement plan     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   $ 0.5 0.2  
Program obligation   0.5 0.2  
Deferred Compensation Plan | Program B        
Manitowoc Deferred Compensation Plan        
Total cost incurred under defined contribution plan   0.5 0.3 0.0
Program asset   8.4 8.7  
Program obligation   $ 8.4 8.7  
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   $ 8.0    
Final benefit payments   0.0 18.9  
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   1.2 1.3 $ 1.5
Estimated future employer contributions   3.1    
Final benefit payments   $ 0.0 $ 0.0