Note 35 - Derivatives - Value of Derivatives held as Fair Value Hedges (Detail) - Derivatives held as Fair Value Hedges [Member] - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Value of Derivatives held as Fair Value Hedges [line items]
Assets	€ 2,401	€ 3,713
Liabilities	7,668	1,000
Nominal amount	95,386	78,176
Fair value changes used for hedge effectiveness	(6,300)	(1,454)
Hedge ineffectiveness	€ (279)	€ 139

No definition available.

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- References

No definition available.

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- References

No definition available.

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- Definition

The gain (loss) on the change in fair value of the hedging instrument used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 24A
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_24A_c&doctype=Standard
-URIDate 2022-03-24

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- Definition

The amount of a hedging instrument, recognised as an asset. [Refer: Hedging instruments [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 24A
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_24A_a&doctype=Standard
-URIDate 2022-03-24

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- Definition

The amount of a hedging instrument, recognised as a liability. [Refer: Hedging instruments [member]]

+ References

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