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 | — | — | — | — | — | — | — |
7,694,000,000
EUR
|
— | — |
6,803,000,000
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 | — | — | — | — | — | — | — |
5,030,000,000
EUR
|
— | — |
4,571,000,000
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 |
2,337,000,000
EUR
|
61,000,000
EUR
|
336,000,000
EUR
|
6,000,000
EUR
|
156,000,000
EUR
|
2,525,000,000
EUR
|
23,000,000
EUR
|
2,531,000,000
EUR
|
29,000,000
EUR
|
4,000,000
EUR
|
2,232,000,000
EUR
|
1,989,000,000
EUR
|
8,000,000
EUR
|
61,000,000
EUR
|
336,000,000
EUR
|
188,000,000
EUR
|
2,225,000,000
EUR
|
31,000,000
EUR
|
2,148,000,000
EUR
|
5,000,000
EUR
|
2,135,000,000
EUR
|
1,000,000
EUR
|
1,000,000
EUR
|
12,000,000
EUR
|
61,000,000
EUR
|
1,000,000
EUR
|
1,891,000,000
EUR
|
1,889,000,000
EUR
|
336,000,000
EUR
|
156,000,000
EUR
|
2,146,000,000
EUR
|
2,136,000,000
EUR
|
9,000,000
EUR
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |