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Performance B.1. Revenue (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Nov. 12, 2021
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue $ 5,624 [1] $ 4,261 [2] $ 3,805 [2]  
Guatemala joint ventures        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Percentage of controlling interest acquired       45.00%
Eliminations        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 8 0 0  
Colombia        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 1,335 1,414 1,346  
Paraguay        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 556 555 544  
Bolivia        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 621 623 584  
El Salvador        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 474 445 389  
Nicaragua        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 247 238 220  
Costa Rica        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 137 141 140  
Panama        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 650 632 585  
Guatemala        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 1,614 223 0  
Guatemala | Guatemala joint ventures        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Percentage of controlling interest acquired       45.00%
Other operations        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 2 2 3  
Other operations | Eliminations        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue (12) (13) (5)  
Service revenue        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 5,171 3,997 3,604  
Service revenue | Eliminations        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 8 0 0  
Mobile        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 2,957 2,000 1,759  
Mobile | Eliminations        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 1   0  
Cable and other fixed services        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 2,145 1,938 1,794  
Cable and other fixed services | Eliminations        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 7 0 0  
Other        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 69 60 51  
Other | Eliminations        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 0 0 0  
Telephone and equipment        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 454 263 201  
Telephone and equipment | Eliminations        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 0   0  
Total revenue        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue $ 5,624 $ 4,261 $ 3,805  
[1] Tigo Guatemala is fully consolidated since the acquisition of the remaining 45% shareholding on November 12, 2021. See note A.1.2. for further details. As a result, numbers might not be directly comparable with previous years' figures.
[2] Re-presented for discontinued operations (see note A.4.)