DISCONTINUED OPERATIONS AND ASSETS AND LIABILITIES HELD FOR SALE - Income (Loss) From Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss (income) attributable to noncontrolling interest	$ 0.0	$ (0.6)	$ 0.0	$ 0.1
Income (loss) from discontinued operations – net of tax attributable to Terex Corporation	$ 0.0	63.5	$ 0.0	(33.3)
Materials Handling and Port Solutions Sale | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		348.8		983.5
Cost of sales		(261.2)		(774.1)
Selling, general and administrative expenses		(63.7)		(222.2)
Reversal of impairment of MHPS disposal group		55.6		0.0
Net interest (expense)		(1.4)		(2.0)
Other income (expense)		(2.3)		(0.1)
Income (loss) from discontinued operations before income taxes		75.8		(14.9)
(Provision for) benefit from income taxes		(11.7)		(18.5)
Income (loss) from discontinued operations – net of tax		64.1		(33.4)
Net loss (income) attributable to noncontrolling interest		(0.6)		0.1
Income (loss) from discontinued operations – net of tax attributable to Terex Corporation		$ 63.5		$ (33.3)