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v3.26.1

Introduction (Tables) | 12 Months Ended
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Dec. 31, 2025
Disclosure of changes in accounting policies, accounting estimates and errors [Abstract] |
Foreign exchange rates | The following table presents functional currency translation rates for the Group’s locations to the US dollar on December 31, 2025 and 2024 and the average rates for the years ended December 31, 2025, 2024 and 2023.
Exchange Rates to the US Dollar | Functional Currency | 2025 Year-end Rate | 2024 Year-end Rate | Change % | 2025 Average Rate | 2024 Average Rate | Change % | 2023 Average Rate
Bolivia (ii) | Boliviano (BOB) | 9.60 |  | 6.91 |  | (28.0) | % | 12.83 |  | 6.91 |  | (46.1) | % | 6.91 |
Colombia | Peso (COP) | 3,757 |  | 4,409 |  | 17.4 | % | 4,053 |  | 4,083 |  | 0.7 | % | 4,313 |
Costa Rica | Costa Rican Colon (CRC) | 501 |  | 513 |  | 2.3 | % | 506 |  | 519 |  | 2 | % | 550 |
Ecuador | US dollar | n/a | n/a | n/a | n/a | n/a | n/a | n/a
El Salvador | US dollar | n/a | n/a | n/a | n/a | n/a | n/a | n/a
Guatemala | Quetzal (GTQ) | 7.66 |  | 7.71 |  | 0.5 | % | 7.68 |  | 7.76 |  | 1.1 | % | 7.84 |
Honduras | Lempira (HNL) | 26.51 |  | 25.44 |  | (4.0) | % | 26.09 |  | 24.88 |  | (4.6) | % | 24.66 |
Luxembourg | Euro (EUR) | 0.85 |  | 0.97 |  | 13.4 | % | 0.89 |  | 0.93 |  | 4.4 | % | 0.93 |
Nicaragua | Cordoba (NIO) | 36.62 |  | 36.62 |  | — | % | 36.62 |  | 36.62 |  | — | % | 36.44 |
Panama | Balboa (B/.) (i) | n/a | n/a | n/a | n/a | n/a | n/a | n/a
Paraguay | Guarani (PYG) | 6,576 |  | 7,831 |  | 19.1 | % | 7,546 |  | 7,569 |  | 0.3 | % | 7,299 |
Sweden | Krona (SEK) | 9.21 |  | 11.07 |  | 20.2 | % | 9.74 |  | 10.57 |  | 8.5 | % | 10.60 |
United Kingdom | Pound (GBP) | 0.74 |  | 0.80 |  | 7.7 | % | 0.76 |  | 0.78 |  | 3.2 | % | 0.80 |
Uruguay (iii) | Uruguayan Peso (UYU) | 39.04 |  | n/a, see Note A.1.2. | 39.57 |  | n/a, see Note A.1.2.
(i) the balboa is tied to the United States dollar at an exchange rate of 1:1. (ii) As from January 1, 2025 Millicom adopted the Amendments to IAS 21, as explained above. (iii) 2025 average rate as from acquisition date (see Note A.1.2.).

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