Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2021-01-01 to 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 |
2021-01-01 to 2021-12-31 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
As at 2021-01-01 |
2020-01-01 to 2020-12-31 |
As at 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 |
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 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
1,007,500
EUR
|
42,000,000
EUR
|
— |
1,688,400
EUR
|
— | — |
9,928,000,000
EUR
|
15,000,000
EUR
|
— |
337,000,000
EUR
|
217,000,000
EUR
|
6,956,000,000
EUR
|
— | — |
432,000,000
EUR
|
217,000,000
EUR
|
1,463,800
EUR
|
8,404,000,000
EUR
|
42,000,000
EUR
|
15,000,000
EUR
|
8,163,000,000
EUR
|
6,476,000,000
EUR
|
— |
6,476,000,000
EUR
|
8,163,000,000
EUR
|
217,000,000
EUR
|
42,000,000
EUR
|
— |
432,000,000
EUR
|
8,404,000,000
EUR
|
15,000,000
EUR
|
— | — |
1,463,800
EUR
|
— | — | — | — |
0
EUR
|
217,000,000
EUR
|
1,433,000
EUR
|
7,832,000,000
EUR
|
6,599,000,000
EUR
|
15,000,000
EUR
|
333,000,000
EUR
|
7,731,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
770,000,000
EUR
|
— | — |
1,607,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
2,377,000,000
EUR
|
1,607,000,000
EUR
|
— | — | — | — | — | — | — | — |
868,000,000
EUR
|
— | — | — | — | — | — | — | — |
554,000,000
EUR
|
— | — | — |
314,000,000
EUR
|
— |
554,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — | — | — | — | — |
432,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
149,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
972,000,000
EUR
|
— | — |
1,836,000,000
EUR
|
— |
0
EUR
|
141,000,000
EUR
|
— | — |
0
EUR
|
— | — | — |
2,808,000,000
EUR
|
1,695,000,000
EUR
|
— | — | — | — | — | — | — | — |
719,000,000
EUR
|
— | — | — | — | — | — | — | — |
552,000,000
EUR
|
0
EUR
|
— |
72,000,000
EUR
|
238,000,000
EUR
|
0
EUR
|
480,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
6,000,000
EUR
|
— | — |
0
EUR
|
— | — | — | — | — | — | — | — | — |
6,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
35,000,000
EUR
|
— | — | — | — | — | — | — | — |
35,000,000
EUR
|
— | — | — | — | — |
35,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
486,000,000
EUR
|
— | — |
71,000,000
EUR
|
— | — |
46,000,000
EUR
|
— | — | — | — | — | — |
557,000,000
EUR
|
25,000,000
EUR
|
— | — | — | — | — | — | — | — |
333,000,000
EUR
|
— | — | — | — | — | — | — | — |
38,000,000
EUR
|
— | — |
27,000,000
EUR
|
343,000,000
EUR
|
— |
11,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — |
0
EUR
|
— | — | — | — | — | — | — | — | — |
0
EUR
|
0
EUR
|
— | — | — | — | — | — | — | — |
42,000,000
EUR
|
— | — | — | — |
42,000,000
EUR
|
— | — | — |
18,000,000
EUR
|
— | — | — |
18,000,000
EUR
|
— |
24,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Increase (decrease) in equity |
492,000,000
EUR
|
— | — |
71,000,000
EUR
|
— |
0
EUR
|
46,000,000
EUR
|
— | — |
0
EUR
|
— | — | — |
563,000,000
EUR
|
25,000,000
EUR
|
— | — | — | — | — | — | — | — |
410,000,000
EUR
|
— | — | — | — |
42,000,000
EUR
|
— | — | — |
21,000,000
EUR
|
0
EUR
|
— |
27,000,000
EUR
|
361,000,000
EUR
|
0
EUR
|
49,000,000
EUR
|
— | — | — | — | — | — | — | — |