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 |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||
| Equity | — |
5 497
EUR
|
— |
1 986
EUR
|
— | — |
3 290
EUR
|
79,000,000
EUR
|
85,000,000
EUR
|
2 207
EUR
|
385,000,000
EUR
|
— |
3 497
EUR
|
— | — | — |
846,000,000
EUR
|
4 465
EUR
|
79,000,000
EUR
|
286,000,000
EUR
|
85,000,000
EUR
|
968,000,000
EUR
|
— | — |
188,000,000
EUR
|
3 459
EUR
|
892,000,000
EUR
|
916,000,000
EUR
|
79,000,000
EUR
|
4 375
EUR
|
85,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||
| Profit (loss) |
8 608
EUR
|
— |
1 920
EUR
|
— |
6 688
EUR
|
1 920
EUR
|
— | — | — | — | — | — | — |
424,000,000
EUR
|
147,000,000
EUR
|
277,000,000
EUR
|
— | — | — | — | — | — | — |
147,000,000
EUR
|
— | — | — | — | — | — | — |
| Other comprehensive income |
540,000,000
EUR
|
— |
136,000,000
EUR
|
— |
404,000,000
EUR
|
— | — | — | — | — | — |
136,000,000
EUR
|
— |
208,000,000
EUR
|
— |
186,000,000
EUR
|
— | — | — | — | — | — |
22,000,000
EUR
|
22,000,000
EUR
|
— | — | — | — | — | — | — |
| Comprehensive income |
8 068
EUR
|
— |
1 784
EUR
|
— |
6 284
EUR
|
1 920
EUR
|
— | — | — | — | — |
136,000,000
EUR
|
— |
216,000,000
EUR
|
147,000,000
EUR
|
91,000,000
EUR
|
— | — | — | — | — | — |
22,000,000
EUR
|
125,000,000
EUR
|
— | — | — | — | — | — | — |
| Issue of equity |
-
EUR
|
— |
-
EUR
|
— |
-
EUR
|
— | — | — | — | — | — | — | — |
-
EUR
|
— |
-
EUR
|
— | — | — | — | — | — | — |
-
EUR
|
— | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
48,000,000
EUR
|
— |
89,000,000
EUR
|
— |
41,000,000
EUR
|
82,000,000
EUR
|
— | — | — | — | — |
7,000,000
EUR
|
— |
72,000,000
EUR
|
— |
63,000,000
EUR
|
— | — | — | — | — | — |
9,000,000
EUR
|
9,000,000
EUR
|
— | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
2,000,000
EUR
|
— |
-
EUR
|
— |
2,000,000
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
|
— |
456,000,000
EUR
|
— |
429,000,000
EUR
|
138,000,000
EUR
|
— | — | — | — | — |
318,000,000
EUR
|
— |
353,000,000
EUR
|
43,000,000
EUR
|
295,000,000
EUR
|
— | — | — | — | — | — |
15,000,000
EUR
|
58,000,000
EUR
|
— | — | — | — | — | — | — |