Property, Plant and Equipment - Components of property, plant and equipment (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment
Total cost	$ 897.7	$ 893.5
Less accumulated depreciation	(542.2)	(527.4)
Property, plant and equipment — net	355.5	366.1
Land
Property, Plant and Equipment
Total cost	14.6	14.9
Building and Improvements
Property, Plant and Equipment
Total cost	198.9	201.5
Machinery, Equipment and Tooling
Property, Plant and Equipment
Total cost	323.0	318.4
Furniture and Fixtures
Property, Plant and Equipment
Total cost	13.3	13.8
Computer Hardware and Software
Property, Plant and Equipment
Total cost	136.6	135.8
Rental cranes
Property, Plant and Equipment
Total cost	202.6	201.9
Construction in Progress
Property, Plant and Equipment
Total cost	$ 8.7	$ 7.2