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COMMITMENTS AND CONTINGENCIES (Details)
$ in Millions
1 Months Ended 12 Months Ended
Oct. 05, 2020
item
May 31, 2015
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2011
USD ($)
Contingency related to spectrum fees        
Commitments and contingencies        
Spectrum fees paid       $ 2.6
Litigation proceedings and disputes in Guyana        
Commitments and contingencies        
Number of competitors issued service licenses | item 2      
Legal claims regarding tax filings with the Guyana Revenue Authority        
Commitments and contingencies        
Future payments related to disputed tax assessments     $ 44.1  
Accrued contingent liability     $ 5.0  
Legal claims regarding tax filings with the Guyana Revenue Authority | Minimum        
Commitments and contingencies        
Percentage of return on investment ensured by the government of Guyana     15.00%  
Breach of contract allegations by TTEC        
Commitments and contingencies        
Amount awarded   $ 2.8    
Pending litigation, adverse outcome        
Commitments and contingencies        
Accrued contingent liability     $ 14.5