XML 350 R102.htm IDEA: XBRL DOCUMENT v3.26.1

Additional disclosure items G.3.1. Litigation and legal risks (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2025	Dec. 31, 2025	Jul. 31, 2025	Dec. 31, 2024
Disclosure of contingent liabilities [line items]
Legal proceedings provision		$ 37		$ 104
Breach of contract claim filed by Telefónica
Disclosure of contingent liabilities [line items]
Legal proceedings provision				88
Deferred Prosecution Agreement, DPA
Disclosure of contingent liabilities [line items]
Losses on litigation settlements		118
Deferred Prosecution Agreement, DPA | Tigo Guatemala
Disclosure of contingent liabilities [line items]
Legal proceedings provision		118
Legal proceedings provision, penalty		60
Legal proceedings provision, forfeiture		58
Payment of litigation settlements	$ 118
Payable on or before July 15, 2026 | Breach of Contract Case Filed By Telefónica
Disclosure of contingent liabilities [line items]
Legal proceedings provision			$ 30
Payable On Or Before July 15, 2027 | Breach of Contract Case Filed By Telefónica
Disclosure of contingent liabilities [line items]
Legal proceedings provision			$ 32
Total for all joint ventures
Disclosure of contingent liabilities [line items]
Legal proceedings provision		1		1
Legal proceedings contingent liability
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities		146		209
Legal proceedings contingent liability | Total for all joint ventures
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities		$ 3		$ 8

X

- 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

Name:	ifrs-full_DisclosureOfContingentLiabilitiesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of the estimated financial effect of contingent liabilities. [Refer: Classes of contingent liabilities [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2025-01-01
-Paragraph 86
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_86_a&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 259
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_259_a&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 259
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_259_a&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_EstimatedFinancialEffectOfContingentLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of provision for legal proceedings. [Refer: Other provisions]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 37
-IssueDate 2025-01-01
-Section Example 10 A court case
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex10_TI
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 37
-IssueDate 2025-01-01
-Paragraph 87
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_87&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_LegalProceedingsProvision
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 98
-Subparagraph f
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_98_f&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_LossesOnLitigationSettlements
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Legal Proceedings Provision, Forfeiture

+ References

No definition available.

+ Details

Name:	tigo_LegalProceedingsProvisionForfeiture
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Legal Proceedings Provision, Penalty

+ References

No definition available.

+ Details

Name:	tigo_LegalProceedingsProvisionPenalty
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Payment Of Litigation Settlements

+ References

No definition available.

+ Details

Name:	tigo_PaymentOfLitigationSettlements
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	ifrs-full_ClassesOfProvisionsAxis=tigo_BreachOfContractClaimFiledByTelefonicaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfProvisionsAxis=tigo_DeferredProsecutionAgreementDPAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=tigo_TigoGuatemalaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tigo_InstallmentAxis=tigo_PayableOnOrBeforeJuly152026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfProvisionsAxis=tigo_BreachOfContractCaseFiledByTelefonicaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	tigo_InstallmentAxis=tigo_PayableOnOrBeforeJuly152027Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=ifrs-full_JointVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=ifrs-full_LegalProceedingsContingentLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: