Investment income - Summary of investment income (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investment income [abstract]
Dividend income	€ 149	€ 122	€ 107
Realised gains/losses on disposal of debt instruments measured at FVOCI	32	45	44
Income from and fair value gains/losses on investment properties	(1)		1
Investment income	€ 181	€ 167	€ 152

The gains (losses) from changes in the fair value of investment property. [Refer: Investment property]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of investment income, such as interest and dividends.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of dividends recognised as income. Dividends are distributions of profits to holders of equity investments in proportion to their holdings of a particular class of capital.

+ References

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Disclosure of Investment Income.

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