Net Loss Per Common Share - Schedule of Basic and Diluted Loss Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net loss from continuing operations	$ (60,639)	$ (31,883)	$ (158,614)	$ (83,455)
Net loss from discontinued operations	(2,368)	(5,531)	(24,206)	(20,237)
Net loss attributable to Ideanomics, Inc. common shareholders	$ (63,007)	$ (37,414)	$ (182,820)	$ (103,692)
Basic weighted average common shares outstanding (in shares)	11,692,394	3,952,490	9,291,974	3,971,139
Diluted weighted average common shares outstanding (in shares)	11,692,394	3,952,490	9,291,974	3,971,139
Net loss per share:
Basic, loss per share from continuing operations (in dollars per share)	$ (5.19)	$ (8.07)	$ (17.07)	$ (21.02)
Diluted, loss per share from continuing operations (in dollars per share)	(5.19)	(8.07)	(17.07)	(21.02)
Basic, loss per share from discontinued operations (in dollars per share)	(0.20)	(1.40)	(2.61)	(5.10)
Diluted, loss per share from discontinued operations (in dollars per share)	(0.20)	(1.40)	(2.61)	(5.10)
Basic loss per share of Common Stock (in dollars per share)	(5.39)	(9.47)	(19.68)	(26.11)
Diluted loss per share of Common Stock (in dollars per share)	$ (5.39)	$ (9.47)	$ (19.68)	$ (26.11)