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Nature of Business - Summary of Impact of Revision to Specific Line Items in Consolidated Statements of Comprehensive Loss (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Comprehensive (Loss) Income attributable to non-controlling interest $ 8,727 $ 12,818  
Comprehensive Income attributable to ADTRAN Holdings, Inc., net of tax $ (246,353) 36,003 $ (8,910)
As Reported [Member]      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Comprehensive (Loss) Income attributable to non-controlling interest   (918)  
Comprehensive Income attributable to ADTRAN Holdings, Inc., net of tax   49,739  
Adjustment [Member]      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Comprehensive (Loss) Income attributable to non-controlling interest   13,736  
Comprehensive Income attributable to ADTRAN Holdings, Inc., net of tax   $ (13,736)