Property, Plant and Equipment - Components of property, plant and equipment (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment
Total cost	$ 852.2	$ 822.6
Less accumulated depreciation	(510.3)	(487.3)
Property, plant and equipment — net	341.9	335.3
Land
Property, Plant and Equipment
Total cost	14.8	17.9
Building and Improvements
Property, Plant and Equipment
Total cost	197.7	194.7
Machinery, Equipment and Tooling
Property, Plant and Equipment
Total cost	308.1	300.6
Furniture and Fixtures
Property, Plant and Equipment
Total cost	13.9	13.8
Computer Hardware and Software
Property, Plant and Equipment
Total cost	133.2	129.4
Rental cranes
Property, Plant and Equipment
Total cost	176.2	157.8
Construction in Progress
Property, Plant and Equipment
Total cost	$ 8.3	$ 8.4