Property, Plant and Equipment - Components of property, plant and equipment (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment
Total cost	$ 928.2	$ 871.4
Less accumulated depreciation	(581.8)	(525.2)
Property, plant and equipment — net	346.4	346.2
Land
Property, Plant and Equipment
Total cost	15.5	14.3
Building and Improvements
Property, Plant and Equipment
Total cost	218.7	203.3
Machinery, Equipment and Tooling
Property, Plant and Equipment
Total cost	355.9	318.3
Furniture and Fixtures
Property, Plant and Equipment
Total cost	14.2	13.3
Computer Hardware and Software
Property, Plant and Equipment
Total cost	135.9	129.6
Rental cranes
Property, Plant and Equipment
Total cost	178.6	185.7
Construction in Progress
Property, Plant and Equipment
Total cost	$ 9.4	$ 6.9