EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Earnings per share
Income (loss) from continuing operations attributable to Terex Corporation Common Stockholders	$ 56.6	$ 33.3	$ 91.7	$ 120.9
Income (loss) from discontinued operations – net of tax	0.0	63.5	0.0	(33.3)
Gain (loss) on disposition of discontinued operations – net of tax	2.6	0.0	63.7	3.5
Net income (loss) attributable to Terex Corporation	$ 59.2	$ 96.8	$ 155.4	$ 91.1
Basic shares:
Weighted average shares outstanding - basic (in shares)	88,000,000	107,600,000	96,200,000	108,500,000
Earnings (loss) per share – basic:
Income (loss) from continuing operations (in dollars per share)	$ 0.64	$ 0.31	$ 0.96	$ 1.12
Income (loss) from discontinued operations - net of tax (in dollars per share)	0.00	0.59	0.00	(0.31)
Gain (loss) on disposition of discontinued operations - net of tax (in dollars per share)	0.03	0.00	0.66	0.03
Net income (loss) attributable to Terex Corporation (in dollars per share)	$ 0.67	$ 0.90	$ 1.62	$ 0.84
Diluted shares:
Weighted average shares outstanding - basic (in shares)	88,000,000	107,600,000	96,200,000	108,500,000
Effect of dilutive securities:
Stock options and restricted stock awards [in shares]	2,000,000	1,000,000	1,900,000	800,000
Diluted weighted average shares outstanding (in shares)	90,000,000	108,600,000	98,100,000	109,300,000
Earnings (loss) per share – diluted:
Income (loss) from continuing operations (in dollars per share)	$ 0.63	$ 0.31	$ 0.93	$ 1.10
Income (loss) from discontinued operations - net of tax (in dollars per share)	0.00	0.58	0.00	(0.30)
Gain (loss) on disposition of discontinued operations - net of tax (in dollars per share)	0.03	0.00	0.65	0.03
Net income (loss) attributable to Terex Corporation (in dollars per share)	0.66	0.89	1.58	0.83
Other details of antidilutive securities
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Stock Options
Other details of antidilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	2,600	23,100	6,100	87,900
Restricted Stock
Other details of antidilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	0	501,000	4,300	711,400