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 |
2023-01-01 to 2023-12-31 |
As at 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 |
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 |
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 |
2022-01-01 to 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 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 |
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 |
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 |
459,000,000
EUR
|
— | — | — |
1,305,000,000
EUR
|
853,000,000
EUR
|
— | — |
1,683,000,000
EUR
|
0
EUR
|
— | — |
0
EUR
|
— | — |
42,000,000
EUR
|
— |
174,000,000
EUR
|
— |
237,000,000
EUR
|
253,000,000
EUR
|
15,000,000
EUR
|
103,000,000
EUR
|
— | — | — | — |
10,664,000,000
EUR
|
332,000,000
EUR
|
— | — |
4,000,000
EUR
|
— | — | — |
1,786,000,000
EUR
|
7,846,000,000
EUR
|
— |
61,000,000
EUR
|
1,170,000,000
EUR
|
6,854,000,000
EUR
|
225,000,000
EUR
|
1,588,000,000
EUR
|
318,000,000
EUR
|
— |
76,000,000
EUR
|
— | — |
232,000,000
EUR
|
5,467,000,000
EUR
|
1,588,000,000
EUR
|
8,851,000,000
EUR
|
5,982,000,000
EUR
|
23,000,000
EUR
|
1,786,000,000
EUR
|
3,000,000
EUR
|
421,000,000
EUR
|
112,000,000
EUR
|
645,000,000
EUR
|
1,170,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
-
EUR
|
2,105,000,000
EUR
|
-
EUR
|
— | — |
2,093,000,000
EUR
|
-
EUR
|
— | — |
12,000,000
EUR
|
-
EUR
|
— |
2,093,000,000
EUR
|
-
EUR
|
— |
-
EUR
|
— |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
-
EUR
|
1,934,000,000
EUR
|
— | — |
1,905,000,000
EUR
|
29,000,000
EUR
|
— |
-
EUR
|
-
EUR
|
1,905,000,000
EUR
|
— | — |
-
EUR
|
— | — | — | — | — | — |
-
EUR
|
— |
-
EUR
|
-
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
-
EUR
|
192,000,000
EUR
|
76,000,000
EUR
|
— | — |
191,000,000
EUR
|
0
EUR
|
— | — |
1,000,000
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
— |
65,000,000
EUR
|
— |
-
EUR
|
— | — | — | — |
179,000,000
EUR
|
-
EUR
|
-
EUR
|
447,000,000
EUR
|
— | — |
-
EUR
|
2,000,000
EUR
|
— |
-
EUR
|
73,000,000
EUR
|
446,000,000
EUR
|
— | — |
19,000,000
EUR
|
— | — | — | — | — | — |
88,000,000
EUR
|
— |
-
EUR
|
304,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
-
EUR
|
1,913,000,000
EUR
|
76,000,000
EUR
|
— | — |
1,902,000,000
EUR
|
0
EUR
|
— | — |
11,000,000
EUR
|
-
EUR
|
— |
2,093,000,000
EUR
|
-
EUR
|
— |
65,000,000
EUR
|
— |
-
EUR
|
— | — | — | — |
179,000,000
EUR
|
-
EUR
|
-
EUR
|
2,382,000,000
EUR
|
— | — |
1,905,000,000
EUR
|
30,000,000
EUR
|
— |
-
EUR
|
73,000,000
EUR
|
2,351,000,000
EUR
|
— | — |
19,000,000
EUR
|
— | — | — | — | — | — |
88,000,000
EUR
|
— |
-
EUR
|
304,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
-
EUR
|
432,000,000
EUR
|
-
EUR
|
— | — |
420,000,000
EUR
|
-
EUR
|
— | — |
12,000,000
EUR
|
-
EUR
|
— |
420,000,000
EUR
|
-
EUR
|
— |
-
EUR
|
— |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
-
EUR
|
421,000,000
EUR
|
— | — |
403,000,000
EUR
|
18,000,000
EUR
|
— |
-
EUR
|
-
EUR
|
403,000,000
EUR
|
— | — |
-
EUR
|
— | — | — | — | — | — |
-
EUR
|
— |
-
EUR
|
-
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — |
81,000,000
EUR
|
84,000,000
EUR
|
0
EUR
|
— | — |
84,000,000
EUR
|
-
EUR
|
— | — |
-
EUR
|
-
EUR
|
— |
3,000,000
EUR
|
-
EUR
|
— |
-
EUR
|
— |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
-
EUR
|
87,000,000
EUR
|
— | — |
48,000,000
EUR
|
63,000,000
EUR
|
— |
-
EUR
|
0
EUR
|
24,000,000
EUR
|
— | — |
0
EUR
|
— | — | — | — | — | — |
1,000,000
EUR
|
— |
-
EUR
|
23,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — |
50,000,000
EUR
|
39,000,000
EUR
|
-
EUR
|
— | — |
39,000,000
EUR
|
-
EUR
|
— | — |
-
EUR
|
-
EUR
|
— |
11,000,000
EUR
|
-
EUR
|
— |
-
EUR
|
— |
-
EUR
|
— | — | — | — |
-
EUR
|
-
EUR
|
7,000,000
EUR
|
7,000,000
EUR
|
— | — |
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
7,000,000
EUR
|
— | — |
-
EUR
|
— | — | — | — | — | — |
-
EUR
|
— |
-
EUR
|
-
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |