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 |
As at 2023-12-31 |
As at 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 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 |
2022-01-01 to 2022-12-31 |
As at 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 | — |
3 625,9
EUR
|
— |
3 356,4
EUR
|
— |
1,644,000,000
EUR
|
358,000,000
EUR
|
580,000,000
EUR
|
3 625,9
EUR
|
112,000,000
EUR
|
— |
3 842,7
EUR
|
— | — | — |
1,644,000,000
EUR
|
358,000,000
EUR
|
3 541,4
EUR
|
580,000,000
EUR
|
3 842,7
EUR
|
— |
430,000,000
EUR
|
4 036,0
EUR
|
4 263,3
EUR
|
310,000,000
EUR
|
1,644,000,000
EUR
|
4 263,3
EUR
|
358,000,000
EUR
|
580,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||
| Profit (loss) |
890,000,000
EUR
|
— |
890,000,000
EUR
|
— |
890,000,000
EUR
|
— | — | — | — | — | — | — |
3,998,000,000
EUR
|
3,998,000,000
EUR
|
— | — | — | — | — | — |
3,998,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
318,000,000
EUR
|
— |
318,000,000
EUR
|
— | — | — | — | — | — | — |
318,000,000
EUR
|
— |
740,000,000
EUR
|
— |
740,000,000
EUR
|
— | — | — | — | — |
740,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
1,208,000,000
EUR
|
— |
1,208,000,000
EUR
|
— |
890,000,000
EUR
|
— | — | — | — | — |
318,000,000
EUR
|
— |
3,258,000,000
EUR
|
3,998,000,000
EUR
|
740,000,000
EUR
|
— | — | — | — | — |
3,258,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
964,000,000
EUR
|
— |
964,000,000
EUR
|
— |
964,000,000
EUR
|
— | — | — | — | — | — | — |
939,000,000
EUR
|
939,000,000
EUR
|
— | — | — | — | — | — |
939,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
4,000,000
EUR
|
— |
4,000,000
EUR
|
— |
4,000,000
EUR
|
— | — | — | — | — | — | — |
9,000,000
EUR
|
9,000,000
EUR
|
— | — | — | — | — | — |
9,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) in equity |
2,168,000,000
EUR
|
— |
2,168,000,000
EUR
|
— |
1,850,000,000
EUR
|
— | — | — | — | — |
318,000,000
EUR
|
— |
4,206,000,000
EUR
|
4,946,000,000
EUR
|
740,000,000
EUR
|
— | — | — | — | — |
4,206,000,000
EUR
|
— | — | — | — | — | — | — | — |