v3.26.1
REVERSE RECAPITALIZATION - Shares effected for exchange ratio (Details) - shares
 12 Months Ended
Jul. 12, 2024
Dec. 31, 2024
Dec. 31, 2022
ACQUISITIONS      
Conversion of convertible debt and accrued interest (in shares) 321,428    
Legacy ConnectM shares   450,702  
Options      
ACQUISITIONS      
Total share reserve     14,810
Warrants      
ACQUISITIONS      
Legacy ConnectM shares     2,422
Shares effected for exchange ratio      
ACQUISITIONS      
Recapitalization applied to common stock outstanding     1,588,141
Issuance of Old ConnectM shares prior to closing of Business Combination     5,000
Conversion of convertible debt and accrued interest (in shares)     321,428
Shares effected for exchange ratio | Series Seed Convertible Preferred Shares      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     644,030
Shares effected for exchange ratio | Series Seed-1 Convertible Preferred Shares      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     91,120
Shares effected for exchange ratio | Series A-1 Convertible Preferred Stock      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     743,068
Shares effected for exchange ratio | Series B-1 Convertible Preferred Stock      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     649,843
Shares effected for exchange ratio | Series B-2 Convertible Preferred Stock      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     299,730
Shares effected for exchange ratio      
ACQUISITIONS      
Recapitalization applied to common stock outstanding     164,831
Issuance of Old ConnectM shares prior to closing of Business Combination     519
Conversion of convertible debt and accrued interest (in shares)     33,362
Recapitalization applied to preferred stock outstanding     450,702
Shares effected for exchange ratio | Series Seed Convertible Preferred Shares      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     66,846
Shares effected for exchange ratio | Series Seed-1 Convertible Preferred Shares      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     9,458
Shares effected for exchange ratio | Series A-1 Convertible Preferred Stock      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     77,126
Shares effected for exchange ratio | Series B-1 Convertible Preferred Stock      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     67,449
Shares effected for exchange ratio | Series B-2 Convertible Preferred Stock      
ACQUISITIONS      
Recapitalization applied to preferred stock outstanding     31,110