Statement Of Changes In Equity [Abstract]
| Concept |
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 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 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||
| Equity |
4,000,000
EUR
|
9,543,000,000
EUR
|
— | — | — |
282,000,000
EUR
|
574,000,000
EUR
|
7,784,000,000
EUR
|
98,000,000
EUR
|
726,000,000
EUR
|
8,969,000,000
EUR
|
1,527,000,000
EUR
|
— | — | — | — |
9,952,000,000
EUR
|
4,000,000
EUR
|
— |
13,464,000,000
EUR
|
1,527,000,000
EUR
|
— | — |
12,788,000,000
EUR
|
676,000,000
EUR
|
415,000,000
EUR
|
98,000,000
EUR
|
1,622,000,000
EUR
|
— | — |
9,282,000,000
EUR
|
840,000,000
EUR
|
4,000,000
EUR
|
11,418,000,000
EUR
|
98,000,000
EUR
|
749,000,000
EUR
|
1,527,000,000
EUR
|
12,258,000,000
EUR
|
1,257,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — |
1,541,000,000
EUR
|
1,427,000,000
EUR
|
114,000,000
EUR
|
— | — | — | — | — | — | — |
1,427,000,000
EUR
|
— | — |
181,000,000
EUR
|
— | — |
2,567,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
2,748,000,000
EUR
|
2,567,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — |
1,567,000,000
EUR
|
26,000,000
EUR
|
— | — | — | — | — | — | — | — |
1,567,000,000
EUR
|
253,000,000
EUR
|
1,340,000,000
EUR
|
5,000,000
EUR
|
— | — |
705,000,000
EUR
|
— | — |
335,000,000
EUR
|
365,000,000
EUR
|
— | — | — | — | — |
700,000,000
EUR
|
6,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income | — | — |
26,000,000
EUR
|
1,454,000,000
EUR
|
114,000,000
EUR
|
— | — | — | — | — | — | — |
139,000,000
EUR
|
253,000,000
EUR
|
1,340,000,000
EUR
|
176,000,000
EUR
|
— | — |
3,272,000,000
EUR
|
— | — |
335,000,000
EUR
|
365,000,000
EUR
|
— | — | — | — | — |
3,448,000,000
EUR
|
2,572,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — | — |
48,000,000
EUR
|
10,000,000
EUR
|
1,000,000
EUR
|
— | — | — | — | — | — | — |
48,000,000
EUR
|
58,000,000
EUR
|
— |
9,000,000
EUR
|
— | — |
9,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
18,000,000
EUR
|
9,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — | — |
—
EUR
|
8,000,000
EUR
|
8,000,000
EUR
|
— | — | — | — | — | — | — |
8,000,000
EUR
|
— | — |
212,000,000
EUR
|
— | — |
700,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
912,000,000
EUR
|
700,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
380,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
380,000,000
EUR
|
380,000,000
EUR
|
— | — | — | — | — | — | — | — | — |