Financial assets held for trading - Additional information (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Financial assets held for trading
Financial assets held for trading	€ 6,301	€ 5,502
Financial assets held for trading
Financial assets held for trading
Fair value	6,301
Individual amount limit to be included in other related parties	50
Financial assets held for trading \| Level 1
Financial assets held for trading
Fair value	5,749
Financial assets held for trading \| Level 2
Financial assets held for trading
Fair value	552
Securities lending
Financial assets held for trading
Financial assets held for trading	€ 1,398	€ 1,361

Disclosure Of Financial Assets Held For Trading

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+ References

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- Definition

The amount of current financial assets measured at fair value through profit or loss classified as held for trading. [Refer: Financial assets at fair value through profit or loss, classified as held for trading]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The fair value of financial assets. [Refer: At fair value [member]; Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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