Statement Of Changes In Equity [Abstract]
| Concept |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||
| Statement of changes in equity [line items] | ||||||||||||
| Increase (decrease) through transactions with owners, equity |
2,472,000,000
EUR
|
2,474,000,000
EUR
|
54,000,000
EUR
|
2,000,000
EUR
|
1,580,000,000
EUR
|
948,000,000
EUR
|
3,908,000,000
EUR
|
785,000,000
EUR
|
49,000,000
EUR
|
3,196,000,000
EUR
|
73,000,000
EUR
|
3,957,000,000
EUR
|
| Purchase of treasury shares |
949,000,000
EUR
|
949,000,000
EUR
|
— | — |
1,000,000
EUR
|
948,000,000
EUR
|
1,993,000,000
EUR
|
1,982,000,000
EUR
|
— |
11,000,000
EUR
|
— |
1,993,000,000
EUR
|
| Cancellation of treasury shares | — | — | — | — | — | — | — |
1,197,000,000
EUR
|
— |
1,197,000,000
EUR
|
— | — |