Immaterial Corrections of Prior Period Financial Statements - Statement of Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss	$ (256,725)	$ (111,581)	$ (96,829)
Foreign currency translation adjustments	(1,385)	3,158	407
Comprehensive loss	(258,110)	(108,423)	(96,422)
Comprehensive loss attributable to non-controlling interest	2,020	9,238	(844)
Comprehensive loss attributable to Ideanomics, Inc. common shareholders	$ (256,090)	(99,369)	$ (98,093)
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss		(106,043)
Foreign currency translation adjustments		3,208
Comprehensive loss		(102,835)
Comprehensive loss attributable to non-controlling interest		6,539
Comprehensive loss attributable to Ideanomics, Inc. common shareholders		(96,480)
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss		(5,538)
Foreign currency translation adjustments		(50)
Comprehensive loss		(5,588)
Comprehensive loss attributable to non-controlling interest		2,699
Comprehensive loss attributable to Ideanomics, Inc. common shareholders		$ (2,889)