Statement Of Changes In Equity [Abstract]
| Concept |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 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 |
As at 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 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 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Equity |
45,000,000
EUR
|
— |
2,510,300
EUR
|
— |
78,000,000
EUR
|
— |
2,510,400
EUR
|
3,702,000,000
EUR
|
2,386,000,000
EUR
|
781,000,000
EUR
|
— | — | — | — |
1,000,000
EUR
|
2,306,600
EUR
|
— |
27,000,000
EUR
|
— | — | — | — | — | — | — | — |
1,438,000,000
EUR
|
2,462,100
EUR
|
86,000,000
EUR
|
213,000,000
EUR
|
84,000,000
EUR
|
3,648,000,000
EUR
|
18,000,000
EUR
|
2,264,000
EUR
|
— |
2,462,100
EUR
|
-
EUR
|
— |
421,000,000
EUR
|
653,000,000
EUR
|
2,296,400
EUR
|
2,527,200
EUR
|
3,574,000,000
EUR
|
97,000,000
EUR
|
311,000,000
EUR
|
42,000,000
EUR
|
2,523,000
EUR
|
20,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
2,006,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
1,000,000
EUR
|
2,006,000,000
EUR
|
— | — | — | — |
2,005,000,000
EUR
|
2,873,000,000
EUR
|
7,000,000
EUR
|
— |
2,873,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
2,880,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
950,000,000
EUR
|
— |
135,000,000
EUR
|
— |
41,000,000
EUR
|
— | — | — | — |
9,000,000
EUR
|
— | — | — | — | — |
865,000,000
EUR
|
— |
950,000,000
EUR
|
426,000,000
EUR
|
— |
3,000,000
EUR
|
— | — |
226,000,000
EUR
|
11,000,000
EUR
|
— | — | — | — | — | — | — | — |
426,000,000
EUR
|
— | — |
208,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
2,956,000,000
EUR
|
— |
135,000,000
EUR
|
— |
41,000,000
EUR
|
— | — | — | — |
9,000,000
EUR
|
— |
1,000,000
EUR
|
2,006,000,000
EUR
|
— | — |
865,000,000
EUR
|
— |
2,955,000,000
EUR
|
3,299,000,000
EUR
|
7,000,000
EUR
|
3,000,000
EUR
|
2,873,000,000
EUR
|
— |
226,000,000
EUR
|
11,000,000
EUR
|
— | — | — | — | — | — | — | — |
3,306,000,000
EUR
|
— | — |
208,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Issue of equity | — |
66,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
54,000,000
EUR
|
2,000,000
EUR
|
12,000,000
EUR
|
— | — | — | — |
68,000,000
EUR
|
86,000,000
EUR
|
— | — |
13,000,000
EUR
|
73,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
86,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
1,399,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1,399,000,000
EUR
|
— | — | — | — |
1,399,000,000
EUR
|
1,954,000,000
EUR
|
9,000,000
EUR
|
— |
1,954,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1,963,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — |
14,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
14,000,000
EUR
|
— | — | — | — |
14,000,000
EUR
|
28,000,000
EUR
|
— | — |
28,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
28,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
75,000,000
EUR
|
40,000,000
EUR
|
— |
75,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
115,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |