Provisions - Schedule of other provisions by type of provision (Details) - EUR (€) € in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of other provisions [line items] | ||
| Provisions | € 8,098 | € 8,407 |
| Other combined provisions | ||
| Disclosure of other provisions [line items] | ||
| Provisions | 4,809 | 5,051 |
| Provisions for taxes | ||
| Disclosure of other provisions [line items] | ||
| Provisions | 760 | 727 |
| Provisions for employment-related proceedings | Brazil | ||
| Disclosure of other provisions [line items] | ||
| Provisions | 533 | 458 |
| Provisions for other legal proceedings | ||
| Disclosure of other provisions [line items] | ||
| Provisions | 1,475 | 1,532 |
| Provision for customer remediation | ||
| Disclosure of other provisions [line items] | ||
| Provisions | 615 | 1,001 |
| Provision for restructuring | ||
| Disclosure of other provisions [line items] | ||
| Provisions | 619 | 589 |
| Other | ||
| Disclosure of other provisions [line items] | ||
| Provisions | € 807 | € 744 |