v3.25.4
Equity - Schedule of changes in treasury shares (Details) - EUR (€)
shares in Thousands, € in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of equity [Line Items]      
Opening balance € (765) € (1,994) € (1,205)
Purchased/sold for trading purposes 6 2 (7)
Purchased under staff share plans (64) (43) (42)
Distributed under staff share plans 60 43 41
Purchased under Share buyback programme (3,641) (3,774) (3,482)
Cancelled under Share buyback programme 2,000 5,000 2,701
Closing balance € (2,404) € (765) € (1,994)
Beginning balance, ordinary shares (in shares) 3,147,391 3,498,194 3,726,539
Issue of shares (in shares)     5
Cancelled Share buyback programme (in shares) (125,848) (350,803) (228,350)
Ending balance, ordinary shares (in shares) 3,021,543 3,147,391 3,498,194
Treasury shares      
Disclosure of equity [Line Items]      
Beginning balance, ordinary shares (in shares) 51,117 154,571 107,395
Issue of shares (in shares) (480) (211) 464
Purchased under staff share and stock option plans (in shares) 3,674 3,319 3,156
Distributed under staff share and stock option plans (in shares) (3,460) (3,343) (3,106)
Share buyback programme (in shares) 194,102 247,584 275,013
Ending balance, ordinary shares (in shares) 119,105 51,117 154,571