Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||
| Increase (decrease) through acquisition of subsidiary, equity |
-
EUR
|
1,000,000
EUR
|
-
EUR
|
1,000,000
EUR
|
-
EUR
|
-
EUR
|
1,000,000
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
103,000,000
EUR
|
103,000,000
EUR
|
103,000,000
EUR
|
-
EUR
|
| Increase (decrease) through transactions with owners, equity |
-
EUR
|
264,000,000
EUR
|
-
EUR
|
188,000,000
EUR
|
27,000,000
EUR
|
452,000,000
EUR
|
237,000,000
EUR
|
-
EUR
|
12,000,000
EUR
|
1,065,000,000
EUR
|
3,114,000,000
EUR
|
1,222,000,000
EUR
|
157,000,000
EUR
|
1,880,000,000
EUR
|
| Reduction of issued capital | — | — | — | — | — | — | — |
-
EUR
|
-
EUR
|
41,000,000
EUR
|
-
EUR
|
41,000,000
EUR
|
-
EUR
|
41,000,000
EUR
|