Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
970,000,000
EUR
|
903,000,000
EUR
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements |
820,000,000
EUR
|
713,000,000
EUR
|
— |
| Categories of financial assets [abstract] | |||
| Financial assets at fair value through profit or loss [abstract] | |||
| Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently |
185,000,000
EUR
|
84,000,000
EUR
|
— |
| Financial assets at fair value through profit or loss, mandatorily measured at fair value |
949,000,000
EUR
|
757,000,000
EUR
|
— |
| Financial assets at fair value through profit or loss, classified as held for trading |
5,783,000,000
EUR
|
6,411,000,000
EUR
|
— |
| Financial assets at fair value through other comprehensive income [abstract] | |||
| Financial assets at fair value through other comprehensive income |
2,992,000,000
EUR
|
3,203,000,000
EUR
|
— |
| Financial assets at amortised cost |
139,302,000,000
EUR
|
137,431,000,000
EUR
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
43,234,000,000
EUR
|
53,683,000,000
EUR
|
38,557,000,000
EUR
|
| Miscellaneous assets [abstract] | |||
| Other assets |
1,253,000,000
EUR
|
1,159,000,000
EUR
|
— |
| Categories of financial liabilities [abstract] | |||
| Financial liabilities at fair value through profit or loss [abstract] | |||
| Financial liabilities at fair value through profit or loss that meet definition of held for trading |
8,463,000,000
EUR
|
8,453,000,000
EUR
|
— |
| Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently |
1,088,000,000
EUR
|
950,000,000
EUR
|
— |
| Financial liabilities at amortised cost |
164,711,000,000
EUR
|
175,142,000,000
EUR
|
— |
| Miscellaneous liabilities [abstract] | |||
| Other liabilities |
1,248,000,000
EUR
|
1,215,000,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
198,241,000,000
EUR
|
207,057,000,000
EUR
|
— |
| Assets less current liabilities [abstract] |