Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||
| Equity | — |
5 364
EUR
|
— |
2 104
EUR
|
— | — |
3 202
EUR
|
218,000,000
EUR
|
149,000,000
EUR
|
22,000,000
EUR
|
2 162
EUR
|
403,000,000
EUR
|
— |
3 587
EUR
|
— | — | — |
883,000,000
EUR
|
218,000,000
EUR
|
4 511
EUR
|
386,000,000
EUR
|
22,000,000
EUR
|
149,000,000
EUR
|
924,000,000
EUR
|
— | — |
22,000,000
EUR
|
296,000,000
EUR
|
3 537
EUR
|
930,000,000
EUR
|
881,000,000
EUR
|
218,000,000
EUR
|
4 418
EUR
|
149,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||
| Profit (loss) |
8 564
EUR
|
— |
1 943
EUR
|
— |
6 621
EUR
|
1 943
EUR
|
— | — | — | — | — | — | — | — |
413,000,000
EUR
|
141,000,000
EUR
|
272,000,000
EUR
|
— | — | — | — | — | — | — | — |
141,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
540,000,000
EUR
|
— |
142,000,000
EUR
|
— |
398,000,000
EUR
|
— | — | — | — | — | — | — |
142,000,000
EUR
|
— |
208,000,000
EUR
|
— |
185,000,000
EUR
|
— | — | — | — | — | — | — |
23,000,000
EUR
|
23,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
8 024
EUR
|
— |
1 801
EUR
|
— |
6 223
EUR
|
1 943
EUR
|
— | — | — | — | — | — |
142,000,000
EUR
|
— |
205,000,000
EUR
|
141,000,000
EUR
|
87,000,000
EUR
|
— | — | — | — | — | — | — |
23,000,000
EUR
|
118,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Issue of equity |
-
EUR
|
— |
-
EUR
|
— |
-
EUR
|
— | — | — | — | — | — | — | — | — |
-
EUR
|
— |
-
EUR
|
— | — | — | — | — | — | — | — |
-
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
46,000,000
EUR
|
— |
88,000,000
EUR
|
— |
42,000,000
EUR
|
81,000,000
EUR
|
— | — | — | — | — | — |
7,000,000
EUR
|
— |
72,000,000
EUR
|
3,000,000
EUR
|
60,000,000
EUR
|
— | — | — | — | — | — | — |
9,000,000
EUR
|
12,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
1,000,000
EUR
|
— |
-
EUR
|
— |
1,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
-
EUR
|
— |
-
EUR
|
— | — | — | — | — | — | — | — |
-
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
27,000,000
EUR
|
— |
475,000,000
EUR
|
— |
448,000,000
EUR
|
144,000,000
EUR
|
— | — | — | — | — | — |
331,000,000
EUR
|
— |
354,000,000
EUR
|
42,000,000
EUR
|
297,000,000
EUR
|
— | — | — | — | — | — | — |
15,000,000
EUR
|
57,000,000
EUR
|
— | — | — | — | — | — | — | — |