Statement Of Changes In Equity [Abstract]
| Concept |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
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 |
2022-04-01 to 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||
| Increase (decrease) through transactions with owners, equity |
1,000,000
EUR
|
3,141,000,000
EUR
|
16,000,000
EUR
|
78,000,000
EUR
|
3,142,000,000
EUR
|
88,000,000
EUR
|
1,555,000,000
EUR
|
4,691,000,000
EUR
|
948,000,000
EUR
|
54,000,000
EUR
|
2,474,000,000
EUR
|
2,000,000
EUR
|
1,580,000,000
EUR
|
2,472,000,000
EUR
|
| Purchase of treasury shares | — |
937,000,000
EUR
|
— | — |
937,000,000
EUR
|
— |
931,000,000
EUR
|
6,000,000
EUR
|
948,000,000
EUR
|
— |
949,000,000
EUR
|
— |
1,000,000
EUR
|
949,000,000
EUR
|
| Sale or issue of treasury shares | — |
9,000,000
EUR
|
— | — |
9,000,000
EUR
|
— |
9,000,000
EUR
|
— | — | — | — | — | — | — |
| Cancellation of treasury shares | — | — | — | — |
-
EUR
|
— |
2,478,000,000
EUR
|
2,478,000,000
EUR
|
— | — | — | — | — | — |