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Investment income (Tables)
 12 Months Ended
Dec. 31, 2023
Investment income [abstract]  
Summary of investment income
Investment income
in EUR million
2023
2022
2021
Dividend income
105
149
122
Realised gains/losses on disposal of debt instruments measured at FVOCI
-11
32
45
Income from and fair value gains/losses on investment properties
-1
95
181
167