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The Millicom Group - A.1.2. Acquisition of subsidiaries and changes in non-controlling interests in subsidiaries - Changes in Fair Value (Details) | 2 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2021 USD ($) | Nov. 12, 2021 USD ($) | Dec. 31, 2022 USD ($) year | Dec. 31, 2021 USD ($) | Dec. 31, 2020
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Goodwill | $ 4,098,000,000 |  | $ 4,059,000,000 | $ 4,098,000,000 |
Guatemala joint ventures |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 55.00% | 100.00% | 55.00% | 55.00%
Guatemala joint ventures |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Intangible assets (excluding goodwill), net | 1,917,000,000 | $ 1,294,000,000 |  | $ 1,917,000,000 |
Intangible assets (excluding goodwill), Changes | 623,000,000 |  |  |  |
Property, plant and equipment, net | 731,000,000 | 547,000,000 |  | 731,000,000 |
Property, plant and equipment, Changes | 184,000,000 |  |  |  |
Right of use assets | 205,000,000 | 189,000,000 |  | 205,000,000 |
Right of use assets, Changes | 17,000,000 |  |  |  |
Other non-current assets | 5,000,000 | 5,000,000 |  | 5,000,000 |
Other non-current assets, Changes | 0 |  |  |  |
Current assets (excluding cash) | 210,000,000 | 210,000,000 |  | 210,000,000 |
Current assets (excluding cash), Changes | 0 |  |  |  |
Trade receivables | 42,000,000 | 42,000,000 |  | 42,000,000 |
Trade receivables, Changes | 0 |  |  |  |
Cash and cash equivalents | 199,000,000 | 199,000,000 |  | 199,000,000 |
Cash and cash equivalents, Changes | 0 |  |  |  |
Assets Recognised As Of Acquisition Date | 3,309,000,000 | 2,486,000,000 |  | 3,309,000,000 |
Total assets acquired, Changes | 823,000,000 |  |  |  |
Lease liabilities | 205,000,000 | 205,000,000 |  | 205,000,000 |
Lease liabilities, Changes | 0 |  |  |  |
Other debt and financing | 417,000,000 | 417,000,000 |  | 417,000,000 |
Other debt and financing, Changes | 0 |  |  |  |
Other liabilities | 281,000,000 | 281,000,000 |  | 281,000,000 |
Other liabilities, Changes | 0 |  |  |  |
Liabilities Recognised As Of Acquisition Date | 903,000,000 | 903,000,000 |  | 903,000,000 |
Total liabilities assumed, Changes | 0 |  |  |  |
Identifiable assets acquired (liabilities assumed) | 2,406,000,000 | 1,583,000,000 |  | 2,406,000,000 |
Fair value of assets acquired and liabilities assumed, net, Changes | 823,000,000 |  |  |  |
Acquisition price | 2,195,000,000 | 2,195,000,000 |  | 2,195,000,000 |
Purchase consideration, Changes | 0 |  |  |  |
Implied fair value | 4,877,000,000 | 4,877,000,000 |  | 4,877,000,000 |
Implied fair value, Changes | 0 |  |  |  |
Carrying value of investment in joint venture | 2,013,000,000 | 2,013,000,000 |  | 2,013,000,000 |
Carrying value of our investment in joint venture at acquisition date, Changes | 0 |  |  |  |
Goodwill recognised as of acquisition date | 1,802,000,000 | 2,625,000,000 |  | 1,802,000,000 |
Goodwill arising on change of control, Changes | (823,000,000) |  |  |  |
Revaluation of previously held interests | 670,000,000 | 670,000,000 |  | 670,000,000 |
Revaluation of previously held interests, Changes | 0 |  |  |  |
Goodwill | 2,472,000,000 | $ 3,295,000,000 |  | $ 2,472,000,000 |
Total goodwill, Changes | (823,000,000) |  |  |  |
Estimated weighted average useful live, property and equipment |  |  | 6 years |  |
Guatemala joint ventures | Customer Lists |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Intangible assets (excluding goodwill), Changes | 514,000,000 |  |  |  |
Estimated weighted average useful live, intangible assets |  |  | 9 years 3 months 18 days |  |
Guatemala joint ventures | Licenses |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Intangible assets (excluding goodwill), Changes | 51,000,000 |  |  |  |
Estimated weighted average useful live, intangible assets |  |  | 11 years |  |
Guatemala joint ventures | Trademarks |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Intangible assets (excluding goodwill), net |  |  | $ 910,000,000 |  |
Intangible assets (excluding goodwill), Changes | $ 62,000,000 |  |  |  |
Telefonia Celular de Nicaragua, S.A. | Remaining Useful Life, Measurement Input | Cost approach | Network Security Equipment and IT Equipment |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant Unobservable Input. Asstes, Useful Lives | year |  |  | 3 |  |
Telefonia Celular de Nicaragua, S.A. | Remaining Useful Life, Measurement Input | Cost approach | Minimum | Buildings |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant Unobservable Input. Asstes, Useful Lives | year |  |  | 35 |  |
Telefonia Celular de Nicaragua, S.A. | Remaining Useful Life, Measurement Input | Cost approach | Minimum | Fiber Optic Infrastructure |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant Unobservable Input. Asstes, Useful Lives | year |  |  | 12 |  |
Telefonia Celular de Nicaragua, S.A. | Remaining Useful Life, Measurement Input | Cost approach | Minimum | Core Network and Other |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant Unobservable Input. Asstes, Useful Lives | year |  |  | 5 |  |
Telefonia Celular de Nicaragua, S.A. | Remaining Useful Life, Measurement Input | Cost approach | Maximum | Buildings |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant Unobservable Input. Asstes, Useful Lives | year |  |  | 40 |  |
Telefonia Celular de Nicaragua, S.A. | Remaining Useful Life, Measurement Input | Cost approach | Maximum | Fiber Optic Infrastructure |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant Unobservable Input. Asstes, Useful Lives | year |  |  | 15 |  |
Telefonia Celular de Nicaragua, S.A. | Remaining Useful Life, Measurement Input | Cost approach | Maximum | Core Network and Other |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant Unobservable Input. Asstes, Useful Lives | year |  |  | 10 |  |
Telefonia Celular de Nicaragua, S.A. | Trademarks | Discount rate | Market approach - Market comparable transactions |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.085 |  |  | 0.085 |
Telefonia Celular de Nicaragua, S.A. | Trademarks | Royalty Rate | Market approach - Market comparable transactions |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.05 |  |  | 0.05 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Discount rate | Market approach - Market comparable transactions |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.10 |  |  | 0.10 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Attrition Rate, Period Average | Income approach - Multi-Period Excess Earnings Method | Mobile Prepaid |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.389 |  |  | 0.389 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Attrition Rate, Period Average | Income approach - Multi-Period Excess Earnings Method | Mobile Postpaid |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.205 |  |  | 0.205 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Attrition Rate, Period Average | Income approach - Multi-Period Excess Earnings Method | B2B |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.13 |  |  | 0.13 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Attrition Rate, Period Average | Income approach - Multi-Period Excess Earnings Method | Home |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.273 |  |  | 0.273 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Attrition Rate, After Period | Income approach - Multi-Period Excess Earnings Method | Mobile Prepaid |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.369 |  |  | 0.369 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Attrition Rate, After Period | Income approach - Multi-Period Excess Earnings Method | Mobile Postpaid |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.166 |  |  | 0.166 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Attrition Rate, After Period | Income approach - Multi-Period Excess Earnings Method | Home |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.279 |  |  | 0.279 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Average Revenue Per User | Income approach - Multi-Period Excess Earnings Method | Mobile Prepaid |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input. assets, average revenue per user | $ 5.7 |  |  | $ 5.7 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Average Revenue Per User | Income approach - Multi-Period Excess Earnings Method | Mobile Postpaid |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input. assets, average revenue per user | 28.7 |  |  | 28.7 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Average Revenue Per User | Income approach - Multi-Period Excess Earnings Method | B2B |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input. assets, average revenue per user | 348.4 |  |  | 348.4 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Average Revenue Per User | Income approach - Multi-Period Excess Earnings Method | Home |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input. assets, average revenue per user | 38 |  |  | 38 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Average Revenue Per User, After Period | Income approach - Multi-Period Excess Earnings Method | Mobile Prepaid |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input. assets, average revenue per user | 5.1 |  |  | 5.1 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Average Revenue Per User, After Period | Income approach - Multi-Period Excess Earnings Method | Mobile Postpaid |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input. assets, average revenue per user | 29.8 |  |  | 29.8 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Average Revenue Per User, After Period | Income approach - Multi-Period Excess Earnings Method | B2B |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input. assets, average revenue per user | 383.5 |  |  | 383.5 |
Telefonia Celular de Nicaragua, S.A. | Customer Lists | Average Revenue Per User, After Period | Income approach - Multi-Period Excess Earnings Method | Home |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input. assets, average revenue per user | $ 41.1 |  |  | $ 41.1 |
Telefonia Celular de Nicaragua, S.A. | Spectrum | Discount rate | Market approach - Market comparable transactions |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Significant unobservable input, assets | 0.08 |  |  | 0.08 |

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