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 |
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] | ||||||
| Purchase of treasury shares |
105,000,000
EUR
|
105,000,000
EUR
|
105,000,000
EUR
|
— | — | — |
| Cancellation of treasury shares | — | — | — |
19,000,000
EUR
|
91,000,000
EUR
|
110,000,000
EUR
|