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 |
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 |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
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 |
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 |
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 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 | — |
387,000,000
EUR
|
124,000,000
EUR
|
17,000,000
EUR
|
2,196,000,000
EUR
|
1,000,000
EUR
|
— | — |
74,000,000
EUR
|
337,000,000
EUR
|
2,201,000,000
EUR
|
2,321,000,000
EUR
|
— | — | — | — |
2,181,000,000
EUR
|
— | — |
142,000,000
EUR
|
7,000,000
EUR
|
— | — |
2,324,000,000
EUR
|
2,195,000,000
EUR
|
53,000,000
EUR
|
— |
68,000,000
EUR
|
7,000,000
EUR
|
— |
1,000,000
EUR
|
— |
29,000,000
EUR
|
2,179,000,000
EUR
|
78,000,000
EUR
|
2,030,000,000
EUR
|
65,000,000
EUR
|
2,108,000,000
EUR
|
9,000,000
EUR
|
1,000,000
EUR
|
48,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
335,000,000
EUR
|
— | — | — | — | — |
325,000,000
EUR
|
— | — | — | — | — | — |
9,000,000
EUR
|
— |
325,000,000
EUR
|
— | — |
262,000,000
EUR
|
— | — |
262,000,000
EUR
|
5,000,000
EUR
|
— | — | — |
267,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
318,000,000
EUR
|
— | — | — | — | — |
11,000,000
EUR
|
24,000,000
EUR
|
— | — | — | — |
343,000,000
EUR
|
9,000,000
EUR
|
— |
309,000,000
EUR
|
— |
35,000,000
EUR
|
41,000,000
EUR
|
— | — |
4,000,000
EUR
|
1,000,000
EUR
|
— | — | — |
42,000,000
EUR
|
— | — |
2,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
17,000,000
EUR
|
— | — | — | — | — |
336,000,000
EUR
|
24,000,000
EUR
|
— | — | — | — |
343,000,000
EUR
|
1,000,000
EUR
|
— |
16,000,000
EUR
|
— |
35,000,000
EUR
|
304,000,000
EUR
|
— | — |
266,000,000
EUR
|
6,000,000
EUR
|
— | — | — |
309,000,000
EUR
|
— | — |
2,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
20,000,000
EUR
|
— | — | — | — | — |
—
EUR
|
— | — | — | — | — | — |
20,000,000
EUR
|
— |
—
EUR
|
— | — |
164,000,000
EUR
|
— | — |
164,000,000
EUR
|
1,000,000
EUR
|
— | — | — |
165,000,000
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
|
— | — | — | — | — | — | — | — |
60,000,000
EUR
|
— | — | — |
60,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
34,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
34,000,000
EUR
|
34,000,000
EUR
|
— | — |
18,000,000
EUR
|
— | — | — | — | — | — | — |
18,000,000
EUR
|
— | — | — | — |
18,000,000
EUR
|
— | — | — | — | — | — | — | — | — |