Equity - Capital (Details) - EUR (€) |
6 Months Ended | |||
|---|---|---|---|---|
Jun. 03, 2025 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Disclosure of classes of share capital [line items] | ||||
| Nominal amount | € 7,443,000,000 | € 7,576,000,000 | ||
| Number of shares outstanding (in shares) | 14,885,325,372 | 15,152,492,322 | ||
| Par value per share (in euro per share) | € 0.50 | € 0.50 | ||
| Reduction of issued capital | € 0 | € 93,000,000 | ||
| (-) Own shares | ||||
| Disclosure of classes of share capital [line items] | ||||
| Reduction of issued capital | € 133,583,475 | € (1,587,000,000) | € (2,769,000,000) | |
| Redemption of treasury shares (in shares) | 267,166,950 | |||