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Condensed financial information of the parent company - Statement of changes in equity (Details) - EUR (€) € in Millions | 5 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 13, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | € 57,004 | € 52,802 | € 52,640
Realised and unrealised revaluations of equity securities |  |  | (30) | (126) | 96
Realised gains/losses transferred to the statement of profit or loss |  |  | 9 | (26) | (42)
Changes in cash flow hedge reserve |  |  | 1,138 | (3,158) | (1,955)
Change in fair value of own credit risk of financial liabilities at fair value through profit or loss |  |  | (39) | 165 | 37
Realised and unrealised revaluations property in own use |  |  | 10 | 15 | (2)
Remeasurement of the net defined benefit asset/liability |  |  | (85) | (19) | 95
Exchange rate differences and other | [1] |  | (85) | 436 | 143
Total amount recognised directly in other comprehensive income net of tax |  |  | 985 | (3,147) | (1,817)
Total comprehensive income |  |  | 5,360 | 9,081 | 4,262
Dividends and other distributions |  | € (1,500) | (2,668) | (2,178) | (1,288)
Share buyback |  | € (1,566) | (4,000) | (1,582) | (1,744)
Changes in treasury shares |  |  | (8) | 4 | (4)
Employee share plans |  |  | (7) | 27 | 29
Balance end of period |  |  | 55,628 | 57,004 | 52,802
Other reserves |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | (2,192) | (540) | 2,342
Realised and unrealised revaluations of equity securities |  |  | (34) | (95) | 101
Realised gains/losses transferred to the statement of profit or loss |  |  | 9 | (25) | (40)
Changes in cash flow hedge reserve |  |  | 997 | (2,901) | (1,603)
Change in fair value of own credit risk of financial liabilities at fair value through profit or loss |  |  | (39) | 150 | 37
Realised and unrealised revaluations property in own use |  |  | 2 | (12) | (13)
Remeasurement of the net defined benefit asset/liability |  |  | (85) | (19) | 95
Exchange rate differences and other |  |  | (132) | 442 | 153
Total amount recognised directly in other comprehensive income net of tax |  |  | (123) | (2,847) | (1,465)
Total comprehensive income |  |  | 213 | (2,686) | (1,274)
Share buyback |  |  | (781) | 403 | (1,604)
Changes in treasury shares |  |  | (8) | 4 | (4)
Balance end of period |  |  | (2,767) | (2,192) | (540)
Unappropriated results |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | 41,538 | 35,462 | 32,149
Realised and unrealised revaluations of equity securities |  |  | (1) | (23) | (6)
Change in fair value of own credit risk of financial liabilities at fair value through profit or loss |  |  | 0 | 15 |
Realised and unrealised revaluations property in own use |  |  | 8 | 26 | 11
Total amount recognised directly in other comprehensive income net of tax |  |  | 899 | (8) | 23
Total comprehensive income |  |  | 4,703 | 11,957 | 5,782
Share buyback |  |  | (3,217) | (1,983) | (140)
Employee share plans |  |  | (7) | 15 | 12
Balance end of period |  |  | 40,299 | 41,538 | 35,462
Parent company |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | 56,500 | 52,066 | 51,619
Realised and unrealised revaluations of equity securities |  |  | (35) | (118) | 94
Unrealised revaluations debt instruments and other revaluations |  |  | 53 | (413) | (173)
Realised gains/losses transferred to the statement of profit or loss |  |  | 9 | (24) | (40)
Changes in cash flow hedge reserve |  |  | 997 | (2,901) | (1,603)
Change in fair value of own credit risk of financial liabilities at fair value through profit or loss |  |  | (39) | 165 | 37
Realised and unrealised revaluations property in own use |  |  | 10 | (5) | (2)
Remeasurement of the net defined benefit asset/liability |  |  | (85) | (19) | 95
Exchange rate differences and other |  |  | (132) | 1,088 | 150
Total amount recognised directly in other comprehensive income net of tax |  |  | 776 | (2,228) | (1,442)
Net result |  |  | 4,140 | 12,126 | 5,951
Total comprehensive income |  |  | 4,916 | 9,898 | 4,509
Transfer from Unappropriated result |  |  |  |  |
Dividends and other distributions |  |  | (2,668) | (3,349) | (2,342)
Share buyback |  |  | (4,000) | (1,582) | (1,744)
Changes in treasury shares |  |  | (8) | 4 | (4)
Employee share plans |  |  | (7) | 27 | 29
Changes in the composition of the group and other changes |  |  | (50) | (564) |
Balance end of period |  |  | 54,684 | 56,500 | 52,066
Parent company | Share capital |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | 37 | 39 | 39
Share buyback |  |  | (2) | (2) |
Balance end of period |  |  | 35 | 37 | 39
Parent company | Share premium |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | 17,116 | 17,105 | 17,089
Employee share plans |  |  |  | 12 | 16
Balance end of period |  |  | 17,116 | 17,116 | 17,105
Parent company | Legal and statutory reserves |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | (986) | 1,073 | 2,347
Realised and unrealised revaluations of equity securities |  |  | (34) | (95) | 101
Unrealised revaluations debt instruments and other revaluations |  |  | 53 | (413) | (173)
Realised gains/losses transferred to the statement of profit or loss |  |  | 9 | (24) | (40)
Changes in cash flow hedge reserve |  |  | 997 | (2,901) | (1,603)
Change in fair value of own credit risk of financial liabilities at fair value through profit or loss |  |  | (39) | 150 | 37
Realised and unrealised revaluations property in own use |  |  | 2 | (32) | (13)
Remeasurement of the net defined benefit asset/liability |  |  | (85) | (19) | 95
Exchange rate differences and other |  |  | (132) | 1,115 | 132
Total amount recognised directly in other comprehensive income net of tax |  |  | 770 | (2,220) | (1,465)
Net result |  |  | 336 | 161 | 191
Total comprehensive income |  |  | 1,106 | (2,059) | (1,274)
Changes in the composition of the group and other changes |  |  | (892) |  |
Balance end of period |  |  | (773) | (986) | 1,073
Parent company | Other reserves |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | 29,002 | 28,909 | 29,988
Realised and unrealised revaluations of equity securities |  |  | (1) | (23) | (6)
Change in fair value of own credit risk of financial liabilities at fair value through profit or loss |  |  |  | 15 |
Realised and unrealised revaluations property in own use |  |  | 8 | 26 | 11
Exchange rate differences and other |  |  |  | (26) | 18
Total amount recognised directly in other comprehensive income net of tax |  |  | 7 | (8) | 23
Total comprehensive income |  |  | 7 | (8) | 23
Transfer from Unappropriated result |  |  | 9,923 | 4,940 | 2,156
Dividends and other distributions |  |  |  | (2,715) | (1,522)
Share buyback |  |  | (3,998) | (1,580) | (1,744)
Changes in treasury shares |  |  | (8) | 4 | (4)
Employee share plans |  |  | (7) | 15 | 12
Changes in the composition of the group and other changes |  |  | 842 | (564) |
Balance end of period |  |  | 35,761 | 29,002 | 28,909
Parent company | Unappropriated results |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Balance start of period |  |  | 11,331 | 4,940 | 2,156
Net result |  |  | 3,804 | 11,965 | 5,760
Total comprehensive income |  |  | 3,804 | 11,965 | 5,760
Transfer from Unappropriated result |  |  | (9,923) | (4,940) | (2,156)
Dividends and other distributions |  |  | (2,668) | (634) | (820)
Balance end of period |  |  | € 2,544 | € 11,331 | € 4,940
[1] | 1 Includes impact of application of hyperinflation accounting under IAS 29.

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- Definition The amount of other comprehensive income, net of tax, after reclassification adjustments, related to exchange differences when financial statements of foreign operations are translated. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 91 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_91_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_7&doctype=Standard -URIDate 2023-03-23 + Details
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