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Payables and Other Non-current Liabilities - Narrative (Details) € in Millions, R$ in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 EUR (€) | Dec. 31, 2024 EUR (€) | Dec. 31, 2023 EUR (€) | Dec. 31, 2024 BRL (R$) | Dec. 31, 2023 BRL (R$)
Trade And Other Payables [Line Items] |  |  |  |  |
Payables and other non-current liabilities |  | € 3,693 | € 3,605 |  |
Additions |  | 1,796 | 1,838 |  |
Non-current portion of non-current borrowings |  | 1,008 | 1,184 |  |
Non-current tax payables |  | 938 | 784 |  |
Telefónica Brazil |  |  |  |  |
Trade And Other Payables [Line Items] |  |  |  |  |
Non-current portion of non-current borrowings |  | 177 | 211 |  |
Non-current tax payables |  | 732 | 655 | R$ 4,714 | R$ 3,502
Service concession arrangements and licenses |  |  |  |  |
Trade And Other Payables [Line Items] |  |  |  |  |
Additions |  | 157 | 183 |  |
Payment on borrowings |  | 210 | 245 |  |
Service concession arrangements and licenses | Telefónica Germany |  |  |  |  |
Trade And Other Payables [Line Items] |  |  |  |  |
Additions | € 1,425 |  |  |  |
Payment on borrowings |  | 108 | 108 |  |
Borrowings |  | 797 | 898 |  |
Non-current portion of non-current borrowings |  | 690 | 791 |  |
Service concession arrangements and licenses | Telefónica Brazil |  |  |  |  |
Trade And Other Payables [Line Items] |  |  |  |  |
Total allocated liabilities |  | 156 | 243 | 1,005 | 1,301
Payables and other non-current liabilities |  | € 146 | € 177 | R$ 942 | R$ 949

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