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Remuneration and other benefits paid to the Bank’s directors and senior managers - Schedule summarising shares assigned for deferred variable remuneration plans (Details) | 12 Months Ended
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Dec. 31, 2025 payments shares | Dec. 31, 2024 shares
Disclosure of transactions between related parties [line items] |  |
Immediate payment percentage | 40.00% |
Deferred payment percentage | 60.00% |
Deferral period | 5 years |
2020 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Long-term metric achievement percentage | 83.00% |
CET objective, result | 100.00% |
CET objective, target | 12.00% |
Individual objectives, weight | 33.30% |
BPA growth objective, result | 150.00% |
BPA growth objective, target | 10.00% |
TSR minimum metric, result | 0.00% |
TSR minimum metric, target | 33.00% |
2021 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Long-term metric achievement percentage | 91.60% |
CET objective, result | 100.00% |
CET objective, target | 12.00% |
Individual objectives, weight | 33.30% |
BPA growth objective, result | 150.00% |
BPA growth objective, target | 100.00% |
TSR minimum metric, result | 25.00% |
TSR minimum metric, target | 33.00% |
TSR maximum metric, target | 66.00% |
2022 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Long-term metric achievement percentage | 115.20% |
RoTE objective, result | 150.00% |
Deferred payment, ROE objective, weight | 40.00% |
Relative TSR metric, achievement rate | 83.00% |
Deferred payment, TSR objective, weight | 40.00% |
Sustainability metric, achievement rate | 25.00% |
Deferred payment, sustainability objective, weight | 20.00% |
Deferred variable compensation plan linked to multiannual objectives |  |
Disclosure of transactions between related parties [line items] |  |
Deferred payment percentage | 60.00% |
Deferral period | 5 years |
Deferred payment, ROE objective, weight | 30.00% |
Deferred payment, TSR objective, weight | 50.00% |
Deferred payment, sustainability objective, weight | 20.00% |
Maximum | Deferred variable compensation plan linked to multiannual objectives |  |
Disclosure of transactions between related parties [line items] |  |
Deferral period | 5 years |
Directors | 2019 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (59,145) | (59,145)
Directors | 2020 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (47,914) | (47,914)
Directors | 2021 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Instruments matured but not consolidated at beginning of period (in shares) |  | (74,992)
Shares delivered (deferred payment variable remuneration) (in shares) | (272,588) | (297,586)
Directors | 2022 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (104,413) | (104,413)
Directors | 2023 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (immediate payment variable remuneration) (in shares) |  | (790,931)
Shares delivered (deferred payment variable remuneration) (in shares) | (188,768) |
Directors | 2024 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (immediate payment variable remuneration) (in shares) | (683,927) |
Directors | Deferred variable compensation plan linked to multiannual objectives |  |
Disclosure of transactions between related parties [line items] |  |
Immediate payment percentage | 40.00% |
Deferred payment percentage | 60.00% |
Deferral period | 5 years |
Number of payments subject to fulfilment of specific objectives | payments | 3 |
Directors | Ana Botín | 2019 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (35,452) | (35,452)
Directors | Ana Botín | 2020 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (31,049) | (31,049)
Directors | Ana Botín | 2021 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Instruments matured but not consolidated at beginning of period (in shares) |  | (44,774)
Shares delivered (deferred payment variable remuneration) (in shares) | (162,750) | (177,675)
Directors | Ana Botín | 2022 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (62,334) | (62,334)
Directors | Ana Botín | 2023 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (immediate payment variable remuneration) (in shares) |  | (469,286)
Shares delivered (deferred payment variable remuneration) (in shares) | (114,421) |
Directors | Ana Botín | 2024 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (immediate payment variable remuneration) (in shares) | (404,447) |
Directors | José Antonio Álvarez | 2019 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (23,693) | (23,693)
Directors | José Antonio Álvarez | 2020 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (16,865) | (16,865)
Directors | José Antonio Álvarez | 2021 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Instruments matured but not consolidated at beginning of period (in shares) |  | (30,218)
Shares delivered (deferred payment variable remuneration) (in shares) | (109,838) | (119,911)
Directors | José Antonio Álvarez | 2022 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (deferred payment variable remuneration) (in shares) | (42,079) | (42,079)
Directors | Héctor Grisi | 2023 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (immediate payment variable remuneration) (in shares) |  | (321,645)
Shares delivered (deferred payment variable remuneration) (in shares) | (74,347) |
Directors | Héctor Grisi | 2024 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Shares delivered (immediate payment variable remuneration) (in shares) | (279,480) |
Directors | Maximum | 2019 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 59,145 | 118,290
Maximum number of shares to be delivered at end of period (in shares) |  | 59,145
Directors | Maximum | 2020 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 95,826 | 143,740
Maximum number of shares to be delivered at end of period (in shares) | 47,912 | 95,826
Directors | Maximum | 2021 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 892,756 | 1,190,342
Maximum number of shares to be delivered at end of period (in shares) | 545,176 | 892,756
Directors | Maximum | 2022 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 495,961 | 600,374
Maximum number of shares to be delivered at end of period (in shares) | 391,548 | 495,961
Directors | Maximum | 2023 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 1,085,421 | 1,876,352
Maximum number of shares to be delivered at end of period (in shares) | 896,653 | 1,085,421
Directors | Maximum | 2024 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 1,632,496 |
Maximum number of shares to be delivered at end of period (in shares) | 948,569 | 1,632,496
Directors | Maximum | 2025 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at end of period (in shares) | 1,010,904 |
Directors | Maximum | Ana Botín | 2019 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 35,452 | 70,905
Maximum number of shares to be delivered at end of period (in shares) |  | 35,452
Directors | Maximum | Ana Botín | 2020 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 62,097 | 93,146
Maximum number of shares to be delivered at end of period (in shares) | 31,048 | 62,097
Directors | Maximum | Ana Botín | 2021 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 533,023 | 710,698
Maximum number of shares to be delivered at end of period (in shares) | 325,499 | 533,023
Directors | Maximum | Ana Botín | 2022 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 296,085 | 358,419
Maximum number of shares to be delivered at end of period (in shares) | 233,751 | 296,085
Directors | Maximum | Ana Botín | 2023 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 657,923 | 1,127,209
Maximum number of shares to be delivered at end of period (in shares) | 543,502 | 657,923
Directors | Maximum | Ana Botín | 2024 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 976,463 |
Maximum number of shares to be delivered at end of period (in shares) | 572,016 | 976,463
Directors | Maximum | Ana Botín | 2025 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at end of period (in shares) | 602,746 |
Directors | Maximum | José Antonio Álvarez | 2019 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 23,693 | 47,386
Maximum number of shares to be delivered at end of period (in shares) |  | 23,693
Directors | Maximum | José Antonio Álvarez | 2020 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 33,729 | 50,594
Maximum number of shares to be delivered at end of period (in shares) | 16,864 | 33,729
Directors | Maximum | José Antonio Álvarez | 2021 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 359,733 | 479,644
Maximum number of shares to be delivered at end of period (in shares) | 219,677 | 359,733
Directors | Maximum | José Antonio Álvarez | 2022 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 199,875 | 241,954
Maximum number of shares to be delivered at end of period (in shares) | 157,796 | 199,875
Directors | Maximum | Héctor Grisi | 2023 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 427,498 | 749,143
Maximum number of shares to be delivered at end of period (in shares) | 353,151 | 427,498
Directors | Maximum | Héctor Grisi | 2024 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at beginning of period (in shares) | 656,033 |
Maximum number of shares to be delivered at end of period (in shares) | 376,553 | 656,033
Directors | Maximum | Héctor Grisi | 2025 variable remuneration |  |
Disclosure of transactions between related parties [line items] |  |
Maximum number of shares to be delivered at end of period (in shares) | 408,159 |

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