Earnings per common share (Parenthetical) - EUR (€) € in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Earnings per Common Share [Abstract] | ||||
| Earnings adjusted for coupons paid for Additional Tier 1 Notes, before tax | € 748 | € 728 | € 796 | € 728 |