Note 12 Financial assets at fair value through other comprehensive income (Details) - EUR (€) € in Millions	Jun. 30, 2026	Dec. 31, 2025
Disclosure of Financial assets at fair value through other comprehensive income [Line Items]
Investments in equity instruments designated at fair value through other comprehensive income	€ 790	€ 1,360
Debt securities at fair value through other comprehensive income	60,669	57,001
Loans and advances to credit institutions at fair value through other comprehensive income	746	448
Financial assets at fair value through other comprehensive income	62,205	58,809
of which loss allowances of debt securities	(40)	(45)
of which loss allowances of loans and advances	€ (68)	€ (65)

Disclosure of Financial assets at fair value through other comprehensive income

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- Definition

of which loss allowances of debt securities

+ References

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- Definition

of which loss allowances of loans and advances

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- Definition

The amount of instruments representing indebtedness held by the entity that are measured at fair value through other comprehensive income. [Refer: Debt instruments held; Financial assets measured at fair value through other comprehensive income]

+ References

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- Definition

The amount of investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: At fair value [member]; Other comprehensive income]

+ References

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- Definition

The amount of financial assets at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets; Other comprehensive income]

+ References

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- Definition

The amount of loans and advances the entity has made to banks that are measured at fair value through other comprehensive income. [Refer: Loans and advances to banks; Financial assets measured at fair value through other comprehensive income]

+ References

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