Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
As at 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 |
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 |
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 | — | — |
2 664,7
EUR
|
— |
4,176,000,000
EUR
|
— | — | — |
130,000,000
EUR
|
1 933,0
EUR
|
— |
3,042,000,000
EUR
|
32,000,000
EUR
|
2 651,7
EUR
|
1 914,3
EUR
|
— | — | — | — | — |
4,203,000,000
EUR
|
205,000,000
EUR
|
1 247,4
EUR
|
32,000,000
EUR
|
2,293,000,000
EUR
|
1 893,7
EUR
|
— | — |
31,000,000
EUR
|
1,003,000,000
EUR
|
1 373,9
EUR
|
1 364,7
EUR
|
1 053,4
EUR
|
92,000,000
EUR
|
2,141,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) |
-
EUR
|
1,474,000,000
EUR
|
— |
1,502,000,000
EUR
|
— |
1,502,000,000
EUR
|
28,000,000
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
457,000,000
EUR
|
5,000,000
EUR
|
452,000,000
EUR
|
— | — | — | — | — | — |
452,000,000
EUR
|
-
EUR
|
— | — | — | — | — | — | — |
| Other comprehensive income |
-
EUR
|
1,405,000,000
EUR
|
— |
1,381,000,000
EUR
|
— |
1,381,000,000
EUR
|
24,000,000
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
2,631,000,000
EUR
|
110,000,000
EUR
|
2,521,000,000
EUR
|
— | — | — | — | — | — |
2,521,000,000
EUR
|
-
EUR
|
— | — | — | — | — | — | — |
| Comprehensive income |
-
EUR
|
69,000,000
EUR
|
— |
120,000,000
EUR
|
— |
120,000,000
EUR
|
52,000,000
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
3,088,000,000
EUR
|
114,000,000
EUR
|
2,973,000,000
EUR
|
— | — | — | — | — | — |
2,973,000,000
EUR
|
-
EUR
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
-
EUR
|
189,000,000
EUR
|
— |
189,000,000
EUR
|
— |
189,000,000
EUR
|
-
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
107,000,000
EUR
|
-
EUR
|
107,000,000
EUR
|
— | — | — | — | — | — |
107,000,000
EUR
|
-
EUR
|
— | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
1,000,000
EUR
|
69,000,000
EUR
|
— |
69,000,000
EUR
|
— |
70,000,000
EUR
|
-
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — | — | — |
1,000,000
EUR
|
-
EUR
|
21,000,000
EUR
|
-
EUR
|
19,000,000
EUR
|
— | — | — | — | — | — |
21,000,000
EUR
|
-
EUR
|
— | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
-
EUR
|
20,000,000
EUR
|
— |
30,000,000
EUR
|
— |
30,000,000
EUR
|
10,000,000
EUR
|
-
EUR
|
— | — |
0
EUR
|
— | — | — | — |
-
EUR
|
0
EUR
|
0
EUR
|
13,000,000
EUR
|
13,000,000
EUR
|
— | — | — | — | — | — |
13,000,000
EUR
|
-
EUR
|
— | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
-
EUR
|
85,000,000
EUR
|
— |
85,000,000
EUR
|
— |
85,000,000
EUR
|
-
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
79,000,000
EUR
|
-
EUR
|
79,000,000
EUR
|
— | — | — | — | — | — |
79,000,000
EUR
|
-
EUR
|
— | — | — | — | — | — | — |