DISCONTINUED OPERATIONS AND ASSETS AND LIABILITIES HELD FOR SALE - Gain (Loss) on Disposition of Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations – net of tax	$ (20.9)	$ 0.2	$ (9.5)	$ 4.8
Discontinued Operations, Disposed of by Sale
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations	(20.8)	(0.2)	(8.4)	2.4
(Provision for) benefit from income taxes	(0.1)	0.4	(1.1)	2.4
Gain (loss) on disposition of discontinued operations – net of tax	(20.9)	0.2	(9.5)	4.8
Discontinued Operations, Disposed of by Sale | Demag-Mobile Cranes Business
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations	(20.8)		(7.1)
(Provision for) benefit from income taxes	(0.1)		(1.0)
Gain (loss) on disposition of discontinued operations – net of tax	(20.9)		(8.1)
Discontinued Operations, Disposed of by Sale | Other
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations		0.0		0.0
(Provision for) benefit from income taxes		0.4		2.8
Gain (loss) on disposition of discontinued operations – net of tax		0.4		2.8
Discontinued Operations, Disposed of by Sale | Material Handling and Port Solutions
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations	0.0	(0.2)	(1.3)	(0.8)
(Provision for) benefit from income taxes	0.0	0.0	(0.1)	0.1
Gain (loss) on disposition of discontinued operations – net of tax	$ 0.0	(0.2)	$ (1.4)	(0.7)
Discontinued Operations, Disposed of by Sale | Atlas
Discontinued operations in the Consolidated Statement of Comprehensive Income
Gain (loss) on disposition of discontinued operations		0.0		3.2
(Provision for) benefit from income taxes		0.0		(0.5)
Gain (loss) on disposition of discontinued operations – net of tax		$ 0.0		$ 2.7