Statement Of Changes In Equity [Abstract]
| Concept |
As at 2023-12-31 |
2023-01-01 to 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 |
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 |
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 |
2023-01-01 to 2023-12-31 |
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 |
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 |
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 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity |
209,000,000
EUR
|
— | — | — |
8,901,000,000
EUR
|
8,029,000,000
EUR
|
— |
8,100,000,000
EUR
|
— | — | — |
922,000,000
EUR
|
98,000,000
EUR
|
280,000,000
EUR
|
46,000,000
EUR
|
— | — | — | — |
9,081,000,000
EUR
|
371,000,000
EUR
|
— |
8,233,000,000
EUR
|
8,211,000,000
EUR
|
348,000,000
EUR
|
922,000,000
EUR
|
108,000,000
EUR
|
33,000,000
EUR
|
— | — | — | — |
182,000,000
EUR
|
6,789,000,000
EUR
|
7,479,000,000
EUR
|
0
EUR
|
6,607,000,000
EUR
|
33,000,000
EUR
|
84,000,000
EUR
|
922,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
0
EUR
|
2,168,000,000
EUR
|
0
EUR
|
— | — |
2,168,000,000
EUR
|
— |
2,168,000,000
EUR
|
0
EUR
|
0
EUR
|
— | — | — | — |
0
EUR
|
0
EUR
|
0
EUR
|
3,495,000,000
EUR
|
— | — |
3,495,000,000
EUR
|
— | — | — | — | — | — |
0
EUR
|
3,495,000,000
EUR
|
0
EUR
|
0
EUR
|
— | — | — | — | — | — | — | — |
| Other comprehensive income | — | — |
165,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
342,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — | — |
2,003,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
3,837,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
0
EUR
|
2,249,000,000
EUR
|
0
EUR
|
— | — |
2,249,000,000
EUR
|
— |
2,249,000,000
EUR
|
0
EUR
|
0
EUR
|
— | — | — | — |
0
EUR
|
0
EUR
|
0
EUR
|
2,112,000,000
EUR
|
— | — |
2,112,000,000
EUR
|
— | — | — | — | — | — |
0
EUR
|
2,112,000,000
EUR
|
0
EUR
|
0
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — |
0
EUR
|
0
EUR
|
0
EUR
|
— | — |
13,000,000
EUR
|
— |
13,000,000
EUR
|
0
EUR
|
0
EUR
|
— | — | — | — |
13,000,000
EUR
|
0
EUR
|
0
EUR
|
0
EUR
|
— | — |
0
EUR
|
— | — | — | — | — | — |
0
EUR
|
0
EUR
|
0
EUR
|
0
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
68,000,000
EUR
|
66,000,000
EUR
|
0
EUR
|
— | — |
66,000,000
EUR
|
— |
2,000,000
EUR
|
0
EUR
|
0
EUR
|
— | — | — | — |
0
EUR
|
0
EUR
|
13,000,000
EUR
|
57,000,000
EUR
|
— | — |
43,000,000
EUR
|
— | — | — | — | — | — |
0
EUR
|
57,000,000
EUR
|
0
EUR
|
0
EUR
|
— | — | — | — | — | — | — | — |