Statement Of Changes In Equity [Abstract]
| Concept |
2021-01-01 to 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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 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 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity | — |
5,697,000,000
EUR
|
— | — |
4 188,9
EUR
|
— | — |
3 169,3
EUR
|
— |
2 601,4
EUR
|
575,000,000
EUR
|
— |
2,347,000,000
EUR
|
1,790,000,000
EUR
|
1 587,5
EUR
|
— | — |
1 283,8
EUR
|
— |
2 003,7
EUR
|
1,789,000,000
EUR
|
2 638,8
EUR
|
— |
5,451,000,000
EUR
|
3,244,000,000
EUR
|
552,000,000
EUR
|
— |
3 287,5
EUR
|
— | — | — | — |
2 423,1
EUR
|
1 392,5
EUR
|
1,981,000,000
EUR
|
533,000,000
EUR
|
3 815,6
EUR
|
5,460,000,000
EUR
|
2 935,3
EUR
|
1,787,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
3,295,000,000
EUR
|
— | — |
1 046,9
EUR
|
— | — |
1 046,9
EUR
|
— | — | — | — | — | — | — | — |
1 376,4
EUR
|
2,310,000,000
EUR
|
— | — | — | — | — |
2,641,000,000
EUR
|
— | — | — | — | — | — |
331,000,000
EUR
|
— |
2,641,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
1,026,000,000
EUR
|
— |
-
EUR
|
2,623,000,000
EUR
|
— |
-
EUR
|
3,638,000,000
EUR
|
— |
1,015,000,000
EUR
|
— | — |
-
EUR
|
— | — | — |
1,597,000,000
EUR
|
2,338,000,000
EUR
|
— |
-
EUR
|
— | — | — |
504,000,000
EUR
|
— | — | — |
-
EUR
|
— |
1,263,000,000
EUR
|
1,579,000,000
EUR
|
-
EUR
|
759,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
4,321,000,000
EUR
|
— |
-
EUR
|
7,846,000,000
EUR
|
— |
-
EUR
|
6,831,000,000
EUR
|
— |
1,015,000,000
EUR
|
— | — |
-
EUR
|
— | — | — |
1 216,7
EUR
|
4,648,000,000
EUR
|
— |
-
EUR
|
— | — | — |
2,136,000,000
EUR
|
— | — | — |
-
EUR
|
— |
1,263,000,000
EUR
|
1,248,000,000
EUR
|
-
EUR
|
3,399,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Issue of equity | — | — | — |
23,000,000
EUR
|
— |
22,000,000
EUR
|
— | — | — | — | — |
1,000,000
EUR
|
— | — | — |
23,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
1,181,000,000
EUR
|
— | — |
1,266,000,000
EUR
|
— | — |
1,266,000,000
EUR
|
— | — | — | — | — | — | — | — |
2,447,000,000
EUR
|
1,410,000,000
EUR
|
— | — | — | — | — |
1,226,000,000
EUR
|
— | — | — | — | — | — |
184,000,000
EUR
|
— |
1,226,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
728,000,000
EUR
|
— | — |
578,000,000
EUR
|
— | — |
578,000,000
EUR
|
— | — | — | — | — | — | — | — |
1,305,000,000
EUR
|
413,000,000
EUR
|
— | — | — | — | — |
199,000,000
EUR
|
— | — | — | — | — | — |
214,000,000
EUR
|
— |
199,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — |
247,000,000
EUR
|
247,000,000
EUR
|
— | — | — | — | — | — | — |
-
EUR
|
— | — | — |
247,000,000
EUR
|
10,000,000
EUR
|
— |
10,000,000
EUR
|
— | — | — | — | — | — | — |
-
EUR
|
— | — | — | — |
10,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
454,000,000
EUR
|
— | — |
12,000,000
EUR
|
— | — |
106,000,000
EUR
|
— |
118,000,000
EUR
|
— | — | — | — | — | — |
442,000,000
EUR
|
34,000,000
EUR
|
— | — | — | — | — |
13,000,000
EUR
|
— | — | — | — | — |
-
EUR
|
21,000,000
EUR
|
— |
13,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
170,000,000
EUR
|
— | — |
211,000,000
EUR
|
— | — |
211,000,000
EUR
|
— | — | — | — | — | — | — | — |
381,000,000
EUR
|
364,000,000
EUR
|
— | — | — | — | — |
211,000,000
EUR
|
— | — | — | — | — | — |
153,000,000
EUR
|
— |
211,000,000
EUR
|
— | — | — | — | — | — | — | — |