Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||
| Increase (decrease) through change in equity of subsidiaries, equity |
18,000,000
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
18,000,000
EUR
|
–
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through acquisition of subsidiary, equity |
38,000,000
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
38,000,000
EUR
|
–
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through transactions with owners, equity |
15,000,000
EUR
|
3,000,000
EUR
|
64,000,000
EUR
|
331,000,000
EUR
|
381,000,000
EUR
|
–
EUR
|
–
EUR
|
3,000,000
EUR
|
366,000,000
EUR
|
114,000,000
EUR
|
1,366,000,000
EUR
|
0
EUR
|
1,000,000
EUR
|
47,000,000
EUR
|
70,000,000
EUR
|
30,000,000
EUR
|
–
EUR
|
32,000,000
EUR
|
1,390,000,000
EUR
|
1,398,000,000
EUR
|
| Purchase of treasury shares |
–
EUR
|
3,000,000
EUR
|
–
EUR
|
–
EUR
|
3,000,000
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
3,000,000
EUR
|
–
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Sale or issue of treasury shares | — | — | — | — | — | — | — | — | — | — |
1,000,000
EUR
|
0
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
1,000,000
EUR
|
1,000,000
EUR
|
| Share issue related cost | — | — | — | — | — | — | — | — | — | — |
11,000,000
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
–
EUR
|
11,000,000
EUR
|
11,000,000
EUR
|