Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 05, 2020
Document And Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	001-35561
Entity Registrant Name	IDEANOMICS, INC.
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	20-1778374
Entity Address, Address Line One	1441 Broadway, 5th Floor, Suite 5116
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10018
City Area Code	212
Local Phone Number	206-1216
Title of 12(b) Security	Common stock, $0.001 par value per share
Trading Symbol	IDEX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		238,971,366
Entity Central Index Key	0000837852
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3