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 |
|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||
| Statement of changes in equity [line items] | ||||||||
| Increase (decrease) through appropriation of retained earnings, equity |
1,861,000,000
EUR
|
0
EUR
|
437,000,000
EUR
|
— |
2,504,000,000
EUR
|
— |
0
EUR
|
4,802,000,000
EUR
|
| Increase (decrease) through conversion of convertible instruments, equity | — |
527,000,000
EUR
|
— | — | — |
527,000,000
EUR
|
0
EUR
|
527,000,000
EUR
|
| Reduction of issued capital | — |
0
EUR
|
— |
665,000,000
EUR
|
— | — |
0
EUR
|
665,000,000
EUR
|