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Staff costs - Schedule of deferred variable remuneration systems, digital transformation award (Details) € in Millions, customer in Millions | 12 Months Ended
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Dec. 31, 2025 EUR (€) people country customer geographies case salesProgram market | Dec. 31, 2024 EUR (€) people | Dec. 31, 2023 | Dec. 31, 2022 EUR (€) block people | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based payment arrangement |  |  |  |  |  |  |
Deferral period | 5 years |  |  |  |  |  |
Total achievement of incentive |  |  |  |  |  |  | 83.00%
Digital Transformation Award |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Maximum number of beneficiaries | people | 250 |  |  |  |  |  |
Maximum amount of incentive | € | € 30 |  |  |  |  |  |
Number of markets with OpenBank | market | 3 |  |  |  |  |  |
Minimum number of countries with SuperDigital, excluding Brazil | country | 1 |  |  |  |  |  |
Percent awarded in shares | 50.00% |  |  |  |  |  |
Percent awarded in options over shares | 50.00% |  |  |  |  |  |
Options, vesting period | 10 years |  |  |  |  |  |
Total achievement of incentive |  |  |  |  |  | 85.00% |
Digital Transformation Award | Minimum |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Deferral period | 3 years |  |  |  |  |  |
Total achievement of incentive |  |  |  |  | 77.50% |  |
Digital Transformation Award | Maximum |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Deferral period | 5 years |  |  |  |  |  |
Digital Transformation Award 2020 & 2021 |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Options, vesting period | 8 years |  |  |  |  |  |
Digital Transformation Award 2020 |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Number of geographies with global merchant services platform | geographies | 3 |  |  |  |  |  |
Number of geographies with global trade services platform | geographies | 8 |  |  |  |  |  |
Number of geographies with global platform SuperDigital | country | 4 |  |  |  |  |  |
Number of priority use cases with machine learning deployment | case | 4 |  |  |  |  |  |
Number of sales programs with conversion rate optimization roll-out | salesProgram | 40 |  |  |  |  |  |
Number of countries with PagoFX global platform | country | 4 |  |  |  |  |  |
Digital Transformation Award 2021 |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Number of countries with Superdigital implemented | country | 7 |  |  |  |  |  |
Number of active customers using Pago Nxt | customer | 1.5 |  |  |  |  |  |
Number of customers acquired in Pago Nxt (in percentage) | 50.00% |  |  |  |  |  |
Minimum number of active countries with One Common Mobile Experience | country | 3 |  |  |  |  |  |
Maximum number of active countries with One Common Mobile Experience | country | 4 |  |  |  |  |  |
Minimum number of countries with One Common Mobile Experience as top three rated entity | country | 2 |  |  |  |  |  |
Maximum number of countries with One Common Mobile Experience as top three rated entity | country | 4 |  |  |  |  |  |
Minimum migratable virtual machines on cloud technology (in percentage) | 75.00% |  |  |  |  |  |
Digital Transformation Award 2022 |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Maximum number of beneficiaries | people |  |  |  | 50 |  |  |
Maximum amount of incentive | € |  |  |  | € 15 |  |  |
Number of different blocks | block |  |  |  | 2 |  |  |
Digital Transformation Award 2022, first block |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Maximum number of beneficiaries | people |  |  |  | 250 |  |  |
Maximum amount of incentive | € |  |  |  | € 30 |  |  |
Percent awarded in shares |  |  |  | 50.00% |  |  |
Percent awarded in options over shares |  |  |  | 50.00% |  |  |
Options, vesting period |  |  |  | 10 years |  |  |
Total achievement of incentive |  |  |  | 96.50% |  |  |
Digital Transformation Award 2022, first block | Minimum |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Deferral period |  |  |  | 3 years |  |  |
Digital Transformation Award 2022, first block | Maximum |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Deferral period |  |  |  | 5 years |  |  |
Digital Transformation Award 2022, second block |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Total achievement of incentive |  |  |  | 100.00% |  |  |
Digital Transformation Award 2023 |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Maximum number of beneficiaries | people |  | 50 |  |  |  |  |
Maximum amount of incentive | € |  | € 15 |  |  |  |  |
Total achievement of incentive |  |  | 88.00% |  |  |  |
Digital Transformation Award 2024 |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Total achievement of incentive | 77.00% |  |  |  |  |  |
Digital Transformation Award 2024 | Minimum |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Maximum number of beneficiaries | people | 50 |  |  |  |  |  |
Digital Transformation Award 2024 | Maximum |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Maximum number of beneficiaries | people | 60 |  |  |  |  |  |
Digital Transformation Award 2025 |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Total achievement of incentive | 85.00% |  |  |  |  |  |
Digital Transformation Award 2025 | Minimum |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Maximum number of beneficiaries | people | 50 |  |  |  |  |  |
Digital Transformation Award 2025 | Maximum |  |  |  |  |  |  |
Share-based payment arrangement |  |  |  |  |  |  |
Maximum number of beneficiaries | people | 60 |  |  |  |  |  |

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