Segments - Schedule of Net Sales By Product (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Product Information [Line Items]
Total net sales	$ 1,581.3	$ 1,613.1	$ 1,865.7
Cranes
Product Information [Line Items]
Total net sales	1,270.5	1,311.1	1,564.3
Aftermarket Parts and Other
Product Information [Line Items]
Total net sales	$ 310.8	$ 302.0	$ 301.4