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 |
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 |
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 |
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 |
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 |
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 |
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 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
2 566
EUR
|
— | — |
3 157
EUR
|
— |
23,000,000
EUR
|
— | — |
7,000,000
EUR
|
3 157
EUR
|
575,000,000
EUR
|
— |
101,000,000
EUR
|
147,000,000
EUR
|
0
EUR
|
— | — | — |
2 050
EUR
|
0
EUR
|
30,000,000
EUR
|
— |
2 409
EUR
|
147,000,000
EUR
|
— |
7,000,000
EUR
|
— |
386,000,000
EUR
|
575,000,000
EUR
|
2 409
EUR
|
— | — |
2 409
EUR
|
— | — | — |
2 568
EUR
|
1,000,000
EUR
|
5,000,000
EUR
|
10,000,000
EUR
|
2 569
EUR
|
575,000,000
EUR
|
1 828
EUR
|
13,000,000
EUR
|
147,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — |
557,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
557,000,000
EUR
|
557,000,000
EUR
|
324,000,000
EUR
|
— | — | — | — | — | — |
324,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
324,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
232,000,000
EUR
|
— |
381,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
0
EUR
|
— |
53,000,000
EUR
|
789,000,000
EUR
|
— |
0
EUR
|
— |
0
EUR
|
285,000,000
EUR
|
— | — | — |
0
EUR
|
— | — | — |
789,000,000
EUR
|
557,000,000
EUR
|
57,000,000
EUR
|
— | — | — |
2,000,000
EUR
|
— | — |
324,000,000
EUR
|
— |
17,000,000
EUR
|
— | — | — |
0
EUR
|
396,000,000
EUR
|
— |
0
EUR
|
0
EUR
|
57,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — |
141,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
141,000,000
EUR
|
141,000,000
EUR
|
141,000,000
EUR
|
— | — | — | — | — | — |
141,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
141,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — | — | — |
5,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
5,000,000
EUR
|
5,000,000
EUR
|
2,000,000
EUR
|
— | — | — | — | — | — |
2,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
2,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — |
6,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
6,000,000
EUR
|
6,000,000
EUR
|
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
0
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — | — | — |
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
0
EUR
|
— |
1,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,000,000
EUR
|
— |
0
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — |
89,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
89,000,000
EUR
|
89,000,000
EUR
|
37,000,000
EUR
|
— | — | — | — | — | — |
37,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
37,000,000
EUR
|
— | — | — | — | — | — | — | — | — |