Earnings (Loss) Per Common Share - Summary of Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net loss attributable to Ideanomics, Inc. common shareholders	$ (28,512)	$ (6,482)
Basic weighted average common shares outstanding (in shares)	497,359,747	391,125,134
Effect of dilutive securities
Convertible preferred shares- Series A (in shares)	0	0
Convertible promissory notes (in shares)	0	0
Diluted potential common shares (in shares)	497,359,747	391,125,134
Earnings (loss) per share:
Basic (in dollars per share)	$ (0.06)	$ (0.02)
Diluted (in dollars per share)	$ (0.06)	$ (0.02)