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The Millicom Group - A.1. Subsidiaries (Details) | 10 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 12, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2018
Telemovil El Salvador S.A. de C.V. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Millicom Cable Costa Rica S.A. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Telefonica Celular de Bolivia S.A. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Telefonica Celular del Paraguay S.A. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Telecomunicaciones Digitales, S.A. (formerly Cable Onda S.A.) |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 80.00% | 80.00% |
Grupo de Comunicaciones Digitales, S.A. (formerly Telefonica Moviles Panama, S.A.) |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 80.00% | 80.00% |
Telefonia Cellular de Nicaragua sa |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Colombia Movil S.A. E.S.P. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 50.00% | 50.00% | 50.00% |
UNE EPM Telecommunicaciones SA |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 50.00% | 50.00% | 50.00% |
Edatel S.A. E.S.P. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 50.00% | 50.00% | 50.00% |
Comunicaciones Celulares S.A |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 55.00% |
Navega.com S.A. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 55.00% |
Millicom International Operations S.A. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Millicom International Operations B.V. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Millicom Telecommunications S.A. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
InfraCo S.A. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% |  |  |
Millicom LIH S.A. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
MIC Latin America B.V. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Millicom Holding B.V. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Millicom International Services LLC |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Millicom Services UK Ltd |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Millicom Spain S.L. |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% | 100.00% | 100.00% |
Guatemala joint ventures |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary | 55.00% | 100.00% | 55.00% | 55.00% |
Honduras joint ventures |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |
Proportion of ownership interest in joint venture |  |  |  |  | 50.00%

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