Property, Plant and Equipment - Components of property, plant and equipment (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment
Total cost	$ 887.3	$ 871.4
Less accumulated depreciation	(542.9)	(525.2)
Property, plant and equipment — net	344.4	346.2
Land
Property, Plant and Equipment
Total cost	14.7	14.3
Building and Improvements
Property, Plant and Equipment
Total cost	207.2	203.3
Machinery, Equipment, and Tooling
Property, Plant and Equipment
Total cost	328.4	318.3
Furniture and Fixtures
Property, Plant and Equipment
Total cost	13.6	13.3
Computer Hardware and Software
Property, Plant and Equipment
Total cost	130.8	129.6
Rental Cranes
Property, Plant and Equipment
Total cost	185.0	185.7
Construction in Progress
Property, Plant and Equipment
Total cost	$ 7.6	$ 6.9