Disclosure Of Fair Value Measurement [Text Block]
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As at 2020-12-31 |
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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 |
7 871,0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
7 416,1
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 |
3 385,4
EUR
|
2,372,000,000
EUR
|
2 335,1
EUR
|
475,000,000
EUR
|
6,144,000,000
EUR
|
187,000,000
EUR
|
1,699,000,000
EUR
|
5,312,000,000
EUR
|
2 874,0
EUR
|
3 337,9
EUR
|
77,000,000
EUR
|
134,000,000
EUR
|
2,401,000,000
EUR
|
2 182,4
EUR
|
3 241,9
EUR
|
440,000,000
EUR
|
3 193,4
EUR
|
2 719,5
EUR
|
485,000,000
EUR
|
6,144,000,000
EUR
|
5,811,000,000
EUR
|
1,699,000,000
EUR
|
590,000,000
EUR
|
62,000,000
EUR
|
2 901,5
EUR
|
1,699,000,000
EUR
|
301,000,000
EUR
|
67,000,000
EUR
|
6,332,000,000
EUR
|
6,144,000,000
EUR
|
2 093,8
EUR
|
2 960,5
EUR
|
2 720,8
EUR
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |