Segments - Schedule of Net Sales By Product (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Product Information [Line Items]
Total net sales	$ 463.4	$ 448.0	$ 504.7	$ 418.0	$ 515.3	$ 450.1	$ 495.3	$ 386.1	$ 1,834.1	$ 1,846.8	$ 1,581.3
Cranes
Product Information [Line Items]
Total net sales									1,498.6	1,509.9	1,270.5
Aftermarket Parts and Other
Product Information [Line Items]
Total net sales									$ 335.5	$ 336.9	$ 310.8