Derivative financial instruments and hedge accounting - Additional Information (Details) - EUR (€) € in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivative financial instruments and hedge accounting
Derivative financial assets	€ 19,670	€ 2,733
Sustainability
Derivative financial instruments and hedge accounting
Derivative financial assets	1
Fair value hedges \| US Dollars
Derivative financial instruments and hedge accounting
Exchange rate risk deriving from securities	€ 2,109
Hedging instrument	153
Bonds issued	€ 2,083

Disclosure of derivative financial instruments

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Exchange rate risk deriving from securities

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- Definition

The amount of bonds issued by the entity.

+ References

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The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

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- Definition

The nominal amount of a hedging instrument. [Refer: Hedging instruments [member]]

+ References

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