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 | — | — |
1,289,400
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,214,400
EUR
|
— | — | — | — | — | — | — | — |
1,329,300
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [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 |
1,720,000,000
EUR
|
1,904,000,000
EUR
|
5,879,000,000
EUR
|
3,000,000
EUR
|
1,483,000,000
EUR
|
12,000,000
EUR
|
5,593,000,000
EUR
|
286,000,000
EUR
|
22,000,000
EUR
|
499,000,000
EUR
|
1,702,000,000
EUR
|
159,000,000
EUR
|
6,000,000
EUR
|
1,904,000,000
EUR
|
3,965,000,000
EUR
|
499,000,000
EUR
|
2,000,000
EUR
|
136,000,000
EUR
|
4,124,000,000
EUR
|
4,036,000,000
EUR
|
499,000,000
EUR
|
94,000,000
EUR
|
3,942,000,000
EUR
|
94,000,000
EUR
|
26,000,000
EUR
|
14,000,000
EUR
|
1,904,000,000
EUR
|
4,015,000,000
EUR
|
14,000,000
EUR
|
21,000,000
EUR
|
21,000,000
EUR
|
1,566,000,000
EUR
|
21,000,000
EUR
|
8,000,000
EUR
|
8,000,000
EUR
|
1,904,000,000
EUR
|
499,000,000
EUR
|
3,921,000,000
EUR
|
26,000,000
EUR
|
1,587,000,000
EUR
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |