Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
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
|
— | — | — | — | — |
2 569
EUR
|
— | — |
2 568
EUR
|
1,000,000
EUR
|
5,000,000
EUR
|
10,000,000
EUR
|
— | — |
575,000,000
EUR
|
2 569
EUR
|
1 828
EUR
|
— |
13,000,000
EUR
|
— |
147,000,000
EUR
|
— | — |
2 225
EUR
|
2 217
EUR
|
0
EUR
|
575,000,000
EUR
|
58,000,000
EUR
|
575,000,000
EUR
|
1 547
EUR
|
8,000,000
EUR
|
2 213
EUR
|
2 221
EUR
|
9,000,000
EUR
|
144,000,000
EUR
|
8,000,000
EUR
|
1 543
EUR
|
9,000,000
EUR
|
0
EUR
|
144,000,000
EUR
|
58,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
324,000,000
EUR
|
— | — | — | — | — | — |
324,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
324,000,000
EUR
|
— | — | — |
400,000,000
EUR
|
— | — | — | — |
400,000,000
EUR
|
— | — | — | — |
400,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
381,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
67,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
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
|
5,000,000
EUR
|
— |
68,000,000
EUR
|
467,000,000
EUR
|
— | — | — | — |
400,000,000
EUR
|
0
EUR
|
— | — | — |
467,000,000
EUR
|
— |
4,000,000
EUR
|
— |
0
EUR
|
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
141,000,000
EUR
|
— | — | — | — | — | — |
141,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
141,000,000
EUR
|
— | — | — |
111,000,000
EUR
|
— | — | — | — |
111,000,000
EUR
|
— | — | — | — |
111,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
2,000,000
EUR
|
— | — | — | — | — | — |
2,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
2,000,000
EUR
|
— | — | — |
2,000,000
EUR
|
— | — | — | — |
2,000,000
EUR
|
— | — | — | — |
2,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
0
EUR
|
— | — | — |
10,000,000
EUR
|
— | — | — | — |
10,000,000
EUR
|
— | — | — | — |
10,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
1,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,000,000
EUR
|
— |
0
EUR
|
— | — | — |
17,000,000
EUR
|
— | — | — | — |
17,000,000
EUR
|
7,000,000
EUR
|
— | — | — |
24,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
37,000,000
EUR
|
— | — | — | — | — | — |
37,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
37,000,000
EUR
|
— | — | — |
28,000,000
EUR
|
— | — | — | — |
25,000,000
EUR
|
— | — | — | — |
28,000,000
EUR
|
— | — | — |
3,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |