DOCUMENT AND ENTITY INFORMATION Document (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Feb. 18, 2015	Jun. 30, 2014
Entity Information [Line Items]
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, 2014
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		106.2
Entity Public Float			$ 4,367
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes