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v3.26.1

Long-term assets - E.1.1. Accounting for intangible assets (Details) | 12 Months Ended
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Dec. 31, 2025
Disclosure of detailed information about intangible assets [line items] |
Period for which item is expensed (less than) | 1 year
Trademarks | Bottom of range |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 1 year
Trademarks | Top of range |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 15 years
Customer lists | Bottom of range |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 4 years
Customer lists | Top of range |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 20 years

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Intangible Assets Other Than Goodwill, Period For Which Items are Expensed + References No definition available. + Details
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Namespace Prefix: | tigo_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period + References No definition available. + Details
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Namespace Prefix: | tigo_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |