BUSINESS SEGMENT INFORMATION - Identifiable Assets by Segment (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Assets	$ 3,420.1	$ 3,462.5
Operating Segments | AWP
Segment Reporting Information [Line Items]
Assets	1,470.6	1,358.5
Operating Segments | Cranes
Segment Reporting Information [Line Items]
Assets	1,662.0	1,685.7
Operating Segments | MP
Segment Reporting Information [Line Items]
Assets	1,293.2	1,219.5
Corporate and Other / Eliminations
Segment Reporting Information [Line Items]
Assets	$ (1,005.7)	$ (801.2)