STOCKHOLDERS' EQUITY - Schedule of Changes in Equity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net income (loss)	$ (4.6)	$ (71.0)
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment (“CTA”), net of (provision for) benefit from taxes of $(4.5) and $0.3, respectively	371.0	61.9
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	(4.5)	0.3
Derivative hedging adjustment, net of (provision for) benefit from taxes of $(0.7) and $0.3, respectively	1.1	(3.6)
Derivative hedging adjustment, tax	(0.7)	0.3
Debt and equity securities adjustment, net of (provision for) benefit from taxes of $0.0 and $0.0, respectively	0.1	(0.4)
Debt and equity securities adjustment, tax	0.0	0.0
Pension Liability adjustment:
Amortization of actuarial (gain) loss, net of provision for (benefit from) taxes of $(0.6) and $(0.5), respectively	1.3	1.9
Pension - Amortization of actuarial (gain) loss, tax portion	(0.6)	(0.5)
Divestiture of business, net of provision for (benefit from) taxes of $(23.9) and $0.0	55.4	0.0
Divestiture of business, tax portion	(23.9)	0.0
Foreign exchange and other effects, net of (provision for) benefit from taxes of $0.3 and $1.2, respectively	(0.8)	(1.4)
Foreign exchange and other effects, tax	0.3	1.2
Total pension liability adjustment	55.9	0.5
Other comprehensive income (loss)	428.1	58.4
Comprehensive income (loss)	423.5	(12.6)
Comprehensive loss (income) attributable to noncontrolling interest	0.0	0.1
Comprehensive income (loss) attributable to Terex Corporation	$ 423.5	$ (12.5)