Statement Of Changes In Equity [Abstract]
| Concept |
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 |
|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||
| Statement of changes in equity [line items] | ||||
| Decrease (increase) through tax on share-based payment transactions, equity |
1,556,000
EUR
|
1,556,000
EUR
|
1,910,000
EUR
|
1,910,000
EUR
|
| Purchase of treasury shares |
10,006,000
EUR
|
10,006,000
EUR
|
12,488,000
EUR
|
12,488,000
EUR
|