Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||
| Increase (decrease) through change in equity of subsidiaries, equity |
-
EUR
|
-
EUR
|
-
EUR
|
13,000,000
EUR
|
14,000,000
EUR
|
1,000,000
EUR
|
1,000,000
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
0
EUR
|
-
EUR
|
-
EUR
|
| Increase (decrease) through transactions with owners, equity |
55,000,000
EUR
|
254,000,000
EUR
|
156,000,000
EUR
|
2,310,000,000
EUR
|
752,000,000
EUR
|
1,558,000,000
EUR
|
2,023,000,000
EUR
|
760,000,000
EUR
|
33,000,000
EUR
|
1,904,000,000
EUR
|
13,000,000
EUR
|
2,233,000,000
EUR
|
329,000,000
EUR
|
1,189,000,000
EUR
|
| Purchase of treasury shares | — | — | — |
55,000,000
EUR
|
— | — | — | — | — | — | — |
263,000,000
EUR
|
— | — |
| Cancellation of treasury shares |
-
EUR
|
-
EUR
|
156,000,000
EUR
|
1,000,000
EUR
|
-
EUR
|
1,000,000
EUR
|
157,000,000
EUR
|
220,000,000
EUR
|
33,000,000
EUR
|
187,000,000
EUR
|
-
EUR
|
187,000,000
EUR
|
-
EUR
|
-
EUR
|