Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 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 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||
| Equity | — |
6 003,6
EUR
|
— |
8,484,000,000
EUR
|
— | — |
–
EUR
|
— | — |
118,000,000
EUR
|
4,500,000,000
EUR
|
6 003,6
EUR
|
— |
5 593,2
EUR
|
6 398,7
EUR
|
— | — | — | — |
–
EUR
|
1 014,7
EUR
|
112,000,000
EUR
|
2,204,000,000
EUR
|
6 398,7
EUR
|
5 593,2
EUR
|
— | — | — |
1 116,8
EUR
|
1 763,9
EUR
|
2 942,8
EUR
|
2 942,8
EUR
|
–
EUR
|
527,000,000
EUR
|
94,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) |
1,299,000,000
EUR
|
— |
1,299,000,000
EUR
|
— |
–
EUR
|
1,299,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
1,763,000,000
EUR
|
1,763,000,000
EUR
|
–
EUR
|
— | — | — | — | — | — |
1,763,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income |
2,297,000,000
EUR
|
— |
2,297,000,000
EUR
|
— |
–
EUR
|
— | — |
2,297,000,000
EUR
|
— | — | — | — | — | — | — | — |
2,731,000,000
EUR
|
— |
–
EUR
|
— | — | — | — | — | — |
2,731,000,000
EUR
|
2,731,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
998,000,000
EUR
|
— |
998,000,000
EUR
|
— |
–
EUR
|
1,299,000,000
EUR
|
— |
2,297,000,000
EUR
|
–
EUR
|
— | — | — |
–
EUR
|
— | — |
–
EUR
|
968,000,000
EUR
|
1,763,000,000
EUR
|
–
EUR
|
— | — | — | — | — | — |
968,000,000
EUR
|
2,731,000,000
EUR
|
–
EUR
|
— | — | — | — | — | — | — |
| Issue of equity |
5,000,000
EUR
|
— |
5,000,000
EUR
|
— |
–
EUR
|
— | — | — |
5,000,000
EUR
|
— | — | — |
–
EUR
|
— | — |
18,000,000
EUR
|
3 831,3
EUR
|
— |
–
EUR
|
— | — | — | — | — | — |
3 831,3
EUR
|
— |
3 829,5
EUR
|
— | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
380,000,000
EUR
|
— |
380,000,000
EUR
|
— |
–
EUR
|
380,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
406,000,000
EUR
|
— |
406,000,000
EUR
|
— |
–
EUR
|
406,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
127,000,000
EUR
|
127,000,000
EUR
|
–
EUR
|
— | — | — | — | — | — |
127,000,000
EUR
|
— | — | — | — | — | — | — | — | — |