Financial assets at fair value through other comprehensive income- Summary of equity securities designated as at fair value through other comprehensive income (Details) - EUR (€) € in Millions	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Carrying value	€ 2,065		€ 2,457
Dividend income	27	€ 15
Investment in Bank of Beijing [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Carrying value	1,796		1,700
Other Investments [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Carrying value	268		€ 757
Dividend income	€ 27	€ 15

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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- Definition

The amount of dividends related to investments in equity instruments that the entity has designated at fair value through other comprehensive income, held at the end of the reporting period. [Refer: Investments in equity instruments designated at fair value through other comprehensive income [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 11A
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_11A_d&doctype=Standard
-URIDate 2021-03-24

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 11A
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_11A_c&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 8
-Subparagraph h
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_8_h&doctype=Standard
-URIDate 2021-03-24

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