DOCUMENT AND ENTITY INFORMATION Document - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Feb. 20, 2019	Jun. 29, 2018
Document and Entity Information [Abstract]
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Registrant Name	TEREX CORP
Entity Central Index Key	0000097216
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		70.4
Entity Public Float			$ 3,721
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Small Business	false