Disclosure Of Fair Value Measurement [Text Block]
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [abstract] | |||||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of assets [line items] | |||||||||||||||||||||||||||||||||
| Assets | — | — | — | — | — | — | — | — | — | — |
8,128,000,000
EUR
|
— |
10,172,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [abstract] | |||||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of liabilities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of liabilities [abstract] | |||||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of liabilities [line items] | |||||||||||||||||||||||||||||||||
| Liabilities | — | — | — | — | — | — | — | — | — | — |
3,686,000,000
EUR
|
— |
4,135,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, liabilities [abstract] | |||||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of equity [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of equity [abstract] | |||||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of equity [line items] | |||||||||||||||||||||||||||||||||
| Equity |
8,000,000
EUR
|
42,000,000
EUR
|
10,291,000,000
EUR
|
13,623,000,000
EUR
|
9,000,000
EUR
|
889,000,000
EUR
|
148,000,000
EUR
|
4,452,000,000
EUR
|
166,000,000
EUR
|
164,000,000
EUR
|
4,442,000,000
EUR
|
20,000,000
EUR
|
6,036,000,000
EUR
|
9,000,000
EUR
|
8,660,000,000
EUR
|
7,000,000
EUR
|
13,743,000,000
EUR
|
758,000,000
EUR
|
192,000,000
EUR
|
192,000,000
EUR
|
6,044,000,000
EUR
|
175,000,000
EUR
|
7,895,000,000
EUR
|
-
EUR
|
9,000,000
EUR
|
8,000,000
EUR
|
13,607,000,000
EUR
|
187,000,000
EUR
|
-
EUR
|
6,813,000,000
EUR
|
718,000,000
EUR
|
7,903,000,000
EUR
|
195,000,000
EUR
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |