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Fair value of assets and liabilities - Methods applied in determining fair values of financial assets and liabilities (carried at amortised cost) (Detail) - EUR (€) € in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Loans and advances to banks | € 16,709 | € 35,104
Loans and advances to customers | 647,313 | 644,893
Deposits from banks | 23,257 | 56,632
Customer deposits | 650,276 | 640,799
Debt securities in issue | 124,670 | 95,918
Subordinated loans | 15,401 | 15,786
Financial liabilities |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Deposits from banks | 22,799 | 56,174
Customer deposits | 649,609 | 640,306
Debt securities in issue | 125,253 | 96,790
Subordinated loans | 15,361 | 15,548
Financial liabilities | 813,022 | 808,818
Financial liabilities | Level 1 |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Deposits from banks |  |
Customer deposits |  |
Debt securities in issue | 62,197 | 43,352
Subordinated loans | 15,050 | 7,843
Financial liabilities | 77,248 | 51,194
Financial liabilities | Level 2 |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Deposits from banks | 15,066 | 48,524
Customer deposits | 52,486 | 35,123
Debt securities in issue | 42,606 | 35,642
Subordinated loans | 311 | 7,705
Financial liabilities | 110,469 | 126,995
Financial liabilities | Level 3 |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Deposits from banks | 3,968 | 3,954
Customer deposits | 41,063 | 15,331
Debt securities in issue | 20,450 | 17,796
Subordinated loans |  |
Financial liabilities | 65,482 | 37,082
Financial liabilities | Carrying Amount |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Deposits from banks | 23,257 | 56,632
Customer deposits | 650,276 | 640,799
Debt securities in issue | 124,670 | 95,918
Subordinated loans | 15,401 | 15,786
Financial liabilities | 813,603 | 809,135
Financial liabilities | Carrying amount presented as fair value |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Deposits from banks | 3,764 | 3,696
Customer deposits | 556,060 | 589,851
Debt securities in issue |  |
Subordinated loans |  |
Financial liabilities | 559,824 | 593,547
Financial Assets |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Loans and advances to banks | 16,662 | 35,104
Loans and advances to customers | 623,381 | 610,164
Securities at amortised cost | 46,010 | 44,353
Financial assets | 686,053 | 689,621
Financial Assets | Level 1 |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Loans and advances to banks |  |
Loans and advances to customers |  |
Securities at amortised cost | 40,041 | 39,787
Financial assets | 40,041 | 39,788
Financial Assets | Level 2 |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Loans and advances to banks | 11,430 | 29,459
Loans and advances to customers | 14,602 | 15,264
Securities at amortised cost | 4,277 | 3,160
Financial assets | 30,308 | 47,883
Financial Assets | Level 3 |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Loans and advances to banks | 2,511 | 2,786
Loans and advances to customers | 593,098 | 575,805
Securities at amortised cost | 1,693 | 1,406
Financial assets | 597,302 | 579,996
Financial Assets | Carrying Amount |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Loans and advances to banks | 16,709 | 35,104
Loans and advances to customers | 647,313 | 644,893
Securities at amortised cost | 48,313 | 48,160
Financial assets | 712,335 | 728,157
Financial Assets | Carrying amount presented as fair value |  |
Disclosure of fair value measurement of assets and liabilities [Line Items] |  |
Loans and advances to banks | 2,722 | 2,859
Loans and advances to customers | 15,681 | 19,095
Securities at amortised cost |  |
Financial assets | € 18,403 | € 21,954

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- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_25&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35H&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35M -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35M&doctype=Standard -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35N -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35N&doctype=Standard -URIDate 2023-03-23 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35I&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_25&doctype=Standard -URIDate 2023-03-23 + Details
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