Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||
| Increase (decrease) through change in equity of subsidiaries, equity |
93,000,000
EUR
|
— |
0
EUR
|
93,000,000
EUR
|
94,000,000
EUR
|
0
EUR
|
1,000,000
EUR
|
0
EUR
|
46,000,000
EUR
|
0
EUR
|
— |
0
EUR
|
0
EUR
|
44,000,000
EUR
|
90,000,000
EUR
|
44,000,000
EUR
|
| Purchase of treasury shares | — |
431,000,000
EUR
|
— |
431,000,000
EUR
|
431,000,000
EUR
|
0
EUR
|
— | — | — |
0
EUR
|
222,000,000
EUR
|
— | — |
222,000,000
EUR
|
222,000,000
EUR
|
— |
| Sale or issue of treasury shares |
2,000,000
EUR
|
439,000,000
EUR
|
— |
437,000,000
EUR
|
437,000,000
EUR
|
0
EUR
|
— | — | — |
0
EUR
|
209,000,000
EUR
|
— | — |
212,000,000
EUR
|
212,000,000
EUR
|
3,000,000
EUR
|