Disclosure Of Fair Value Measurement [Text Block]
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As at 2020-12-31 |
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As at 2019-12-31 |
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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 |
30,688,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
30,961,000,000
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 |
13,283,000,000
EUR
|
34,000,000
EUR
|
5,025,000,000
EUR
|
6,832,000,000
EUR
|
275,000,000
EUR
|
178,000,000
EUR
|
1,866,000,000
EUR
|
13,249,000,000
EUR
|
376,000,000
EUR
|
2,000,000
EUR
|
476,000,000
EUR
|
9,344,000,000
EUR
|
14,475,000,000
EUR
|
25,000,000
EUR
|
344,000,000
EUR
|
14,438,000,000
EUR
|
4,646,000,000
EUR
|
36,000,000
EUR
|
1,117,000,000
EUR
|
177,000,000
EUR
|
7,828,000,000
EUR
|
31,000,000
EUR
|
23,000,000
EUR
|
11,870,000,000
EUR
|
182,000,000
EUR
|
58,000,000
EUR
|
199,000,000
EUR
|
4,400,000,000
EUR
|
11,901,000,000
EUR
|
305,000,000
EUR
|
12,597,000,000
EUR
|
28,000,000
EUR
|
978,000,000
EUR
|
12,625,000,000
EUR
|
3,671,000,000
EUR
|
8,296,000,000
EUR
|
303,000,000
EUR
|
201,000,000
EUR
|
24,000,000
EUR
|
179,000,000
EUR
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |