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Provisions - Balances Provisions Brazil (Details) € in Millions, R$ in Millions | Dec. 31, 2024 EUR (€) | Dec. 31, 2024 BRL (R$) | Dec. 31, 2023 EUR (€) | Dec. 31, 2023 BRL (R$) | Dec. 31, 2022 EUR (€)
--- | --- | --- | --- | --- | ---
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | € 2,189 |  | € 2,574 |  |
Regulatory proceedings |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 476 | R$ 3,067 | 1,264 | R$ 6,765 |
Brazil |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 877 |  | 1,229 |  |
Brazil | Tax proceedings |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 314 |  | 515 |  | € 446
Brazil | Tax proceedings | Federal taxes |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 126 |  | 149 |  |
Brazil | Tax proceedings | State taxes |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 72 |  | 248 |  |
Brazil | Tax proceedings | Municipal taxes |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 21 |  | 9 |  |
Brazil | Tax proceedings | FUST |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 95 |  | 109 |  |
Brazil | Regulatory proceedings |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 179 | R$ 1,151 | 329 | R$ 1,761 |
Brazil | Labor claims |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 145 |  | 130 |  |
Brazil | Civil proceedings |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 219 |  | 229 |  |
Brazil | Amounts to be refunded to customers |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | 14 |  | 18 |  |
Brazil | Provision for fines for canceling lease agreements |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |
Other provisions | € 6 |  | € 8 |  |

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- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Paragraph 84 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_84_a&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_d&doctype=Standard -URIDate 2024-03-27 + Details
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