Statement Of Changes In Equity [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
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 transactions with owners, equity |
582,000,000
EUR
|
1,640,000,000
EUR
|
69,000,000
EUR
|
1,461,000,000
EUR
|
1,579,000,000
EUR
|
179,000,000
EUR
|
712,000,000
EUR
|
248,000,000
EUR
|
141,000,000
EUR
|
27,000,000
EUR
|
2,808,000,000
EUR
|
3,056,000,000
EUR
|
2,922,000,000
EUR
|
| Purchase of treasury shares |
219,000,000
EUR
|
219,000,000
EUR
|
— |
219,000,000
EUR
|
— | — | — | — | — |
135,000,000
EUR
|
135,000,000
EUR
|
135,000,000
EUR
|
— |
| Cancellation of treasury shares |
712,000,000
EUR
|
—
EUR
|
— |
—
EUR
|
— | — |
712,000,000
EUR
|
— | — | — | — | — | — |