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 |
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 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
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 |
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 2020-12-31 |
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 | — |
2 0, 275
EUR
|
— | — |
3 4 ,918
EUR
|
— |
1 ,76 4
EUR
|
3 2,888
EUR
|
12 , 575
EUR
|
— | — |
38,000,000
EUR
|
266,000,000
EUR
|
— | — |
277,000,000
EUR
|
3 6, 731
EUR
|
39,000,000
EUR
|
24 , 11 8
EUR
|
1 2 , 5 74
EUR
|
— | — |
3 8,7 72
EUR
|
— | — | — | — |
1 ,76 4
EUR
|
30, 7 68
EUR
|
26 0
EUR
|
18, 155
EUR
|
32 ,792
EUR
|
12, 572
EUR
|
41,000,000
EUR
|
1,76 4
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) |
20,000,000
EUR
|
— |
3, 278
EUR
|
3 , 27 8
EUR
|
— | — | — | — | — | — | — | — | — |
3, 298
EUR
|
1,926,000,000
EUR
|
— | — | — | — | — |
1,9 0 4
EUR
|
— | — |
22,000,000
EUR
|
— |
1, 9 0 4
EUR
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income |
2,000,000
EUR
|
— |
6 ,10 3
EUR
|
6 ,10 3
EUR
|
— |
–
EUR
|
— | — | — |
–
EUR
|
–
EUR
|
— | — |
6 ,101
EUR
|
5 ,10 6
EUR
|
— | — | — | — | — |
5 ,10 5
EUR
|
–
EUR
|
— |
1,000,000
EUR
|
–
EUR
|
5 ,10 5
EUR
|
–
EUR
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
22,000,000
EUR
|
— |
2 , 8 2 5
EUR
|
2 , 8 2 5
EUR
|
— |
–
EUR
|
— | — | — |
–
EUR
|
–
EUR
|
— | — |
2 , 8 0 3
EUR
|
7, 0 3 2
EUR
|
— | — | — | — | — |
7, 0 0 9
EUR
|
–
EUR
|
— |
23,000,000
EUR
|
–
EUR
|
7, 0 0 9
EUR
|
–
EUR
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
33,000,000
EUR
|
— |
412,000,000
EUR
|
412,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
4 45
EUR
|
400,000,000
EUR
|
— | — | — | — | — |
39 4
EUR
|
— | — |
6,000,000
EUR
|
— |
3 9 4
EUR
|
— | — | — | — | — | — | — | — | — |
| Decrease through other distributions to owners, equity | — | — |
59,000,000
EUR
|
59,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
59,000,000
EUR
|
59,000,000
EUR
|
— | — | — | — | — |
59,000,000
EUR
|
— | — | — | — |
59,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — |
5 45
EUR
|
5 45
EUR
|
— | — | — | — | — | — | — | — | — |
5 45
EUR
|
62 2
EUR
|
— | — | — | — | — |
62 2
EUR
|
— | — | — | — |
622,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — |
2,000,000
EUR
|
2,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
2,000,000
EUR
|
1,000,000
EUR
|
— | — | — | — | — |
1,000,000
EUR
|
— | — | — | — |
1,000,000
EUR
|
— | — | — | — | — | — | — | — | — |