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Performance B.1. Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | $ 4,171 | $ 4,336 | $ 3,946 | [1]
Eliminations |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | (4) |  |  |
Colombia |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 1,346 | 1,532 | 1,661 |
Paraguay |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 544 | 610 | 679 |
Bolivia |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 584 | 639 | 614 |
El Salvador |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 389 | 386 | 405 |
Tanzania |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 366 | 382 | 399 |
Nicaragua |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 220 | 157 | 13 |
Costa Rica |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 140 | 153 | 155 |
Panama |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 585 | 475 | 17 |
Other operations |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 3 | 4 | 6 |
Other operations | Eliminations |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | (5) | (3) | (2) |
Service revenue |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 3,971 | 4,130 | 3,734 |
Service revenue | Eliminations |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | (4) |  |  |
Mobile |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 2,116 | 2,150 | 2,126 |
Cable and other fixed services |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 1,803 | 1,928 | 1,565 |
Cable and other fixed services | Eliminations |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | (1) |  |  |
Other |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 52 | 51 | 43 |
Other | Eliminations |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | (2) |  |  |
Telephone and equipment and other |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | 201 | 206 | 212 |
Total revenue |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Revenue | $ 4,171 | $ 4,336 | $ 3,946 |
[1] | 2018 was not restated for the application of IFRS 16, as the Group elected the modified retrospective approach.

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