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Cash Flow Detail - Financing Activities, Dividends and Shares (Details) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jan. 31, 2023
Dividends [Line Items] |  |  |  |
Dividends paid | € (1,887) | € (2,139) | € (1,397) |
(Payments)/proceeds from share capital decrease/increase with minority interests | (57) | 113 | 1,022 |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | (1,301) | (1,771) | (555) |
Operations with other equity holders | (346) | (329) | (268) |
Undated deeply subordinated securities |  |  |  |
Dividends [Line Items] |  |  |  |
Operations with other equity holders | 1,300 | 1,750 | 750 |
Acquisition and payment of undated deeply subordinated securities (Note 17.c) | (1,300) | (1,750) | (750) |
Coupon related to undated deeply subordinated securities |  |  |  |
Dividends [Line Items] |  |  |  |
Payments for equity | (346) | (329) | (268) |
Telefonica Moviles Guatemala & Telefonica Celular de Nicaragua & Telefonica Moviles Panama |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | 0 | 0 | (44) |
Pontel Participaciones, S.L. Holding company |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds from share capital (decrease)/increase with minority interest | 0 | 111 | 0 |
Pontel Participaciones, S.L. Holding company | Telxius Telecom, S.A. |  |  |  |
Dividends [Line Items] |  |  |  |
Percentage of voting equity interests acquired |  |  |  | 40.00%
Bluevia Fibra S.L.U. |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds from share capital (decrease)/increase with minority interest | 0 | 0 | 1,021 |
Telefonica Brasil, S.A. |  |  |  |
Dividends [Line Items] |  |  |  |
Payments from changes in ownership interests in subsidiaries that do not result in loss of control | (57) | 0 | 0 |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | (224) | (92) | (111) |
Others |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds from share capital (decrease)/increase with minority interest | 0 | 2 | 1 |
KKR Alameda Aggregator L.P. |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | 0 | (351) | 0 |
KKR Alameda Aggregator L.P. | Telxius Telecom, S.A. |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | € 0 | (224) | 0 |
Percentage of voting equity interests acquired | 40.00% |  |  |
Pontegadea Inversiones, S.L. |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | € 0 | (88) | 0 |
Telefonica Deutschland Holding A.G. |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | (1,019) | (816) | (48) |
Telefonica, S.A. |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | (58) | (223) | (365) |
Telefónica Hispanoamérica, S.A.U. Holding company |  |  |  |
Dividends [Line Items] |  |  |  |
(Payments)/proceeds of treasury shares and other operations with shareholders and with minority interests | 0 | 23 | 13 |
Dividends paid by Telefonica, S.A. |  |  |  |
Dividends [Line Items] |  |  |  |
Dividends paid | (1,720) | (1,701) | (959) |
Non-controlling interests in Telefonica Brasil, S.A. |  |  |  |
Dividends [Line Items] |  |  |  |
Dividends paid | (113) | (189) | (268) |
Non-controlling interests of Telefonica Deutschland |  |  |  |
Dividends [Line Items] |  |  |  |
Dividends paid | (17) | (157) | (161) |
Payments to non-controlling interests of Telxius Telecom, S.A. |  |  |  |
Dividends [Line Items] |  |  |  |
Dividends paid | 0 | (76) | 0 |
Others |  |  |  |
Dividends [Line Items] |  |  |  |
Dividends paid | € (37) | € (16) | € (9) |

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