Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
3,368,000,000
EUR
|
4,000,000
EUR
|
1,216,000,000
EUR
|
— | — | — |
5,079,000,000
EUR
|
17,000,000
EUR
|
0
EUR
|
— | — | — |
5,070,000,000
EUR
|
9,000,000
EUR
|
— |
150,000,000
EUR
|
615,000,000
EUR
|
— | — | — |
1,000,000
EUR
|
1,153,000,000
EUR
|
9,000,000
EUR
|
-
EUR
|
— |
605,000,000
EUR
|
1,563,000,000
EUR
|
— | — | — |
205,000,000
EUR
|
— | — |
1,563,000,000
EUR
|
— | — |
12,000,000
EUR
|
6,000,000
EUR
|
— |
1,000,000
EUR
|
1,512,000,000
EUR
|
-
EUR
|
221,000,000
EUR
|
12,000,000
EUR
|
1,512,000,000
EUR
|
1,119,000,000
EUR
|
6,000,000
EUR
|
10,000,000
EUR
|
605,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
1,000,000
EUR
|
— | — | — |
-
EUR
|
-
EUR
|
310,000,000
EUR
|
— | — | — |
-
EUR
|
-
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — |
312,000,000
EUR
|
310,000,000
EUR
|
178,000,000
EUR
|
— | — | — | — |
-
EUR
|
— | — |
178,000,000
EUR
|
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
— | — |
178,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
106,000,000
EUR
|
— |
22,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
1,000,000
EUR
|
— | — | — |
26,000,000
EUR
|
-
EUR
|
416,000,000
EUR
|
— | — | — |
55,000,000
EUR
|
-
EUR
|
6,000,000
EUR
|
— | — |
-
EUR
|
— | — |
418,000,000
EUR
|
342,000,000
EUR
|
200,000,000
EUR
|
— | — | — | — |
-
EUR
|
— | — |
183,000,000
EUR
|
-
EUR
|
2,000,000
EUR
|
— |
-
EUR
|
-
EUR
|
— |
16,000,000
EUR
|
-
EUR
|
— | — |
200,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
-
EUR
|
— | — | — |
-
EUR
|
-
EUR
|
271,000,000
EUR
|
— | — | — |
-
EUR
|
-
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — |
271,000,000
EUR
|
271,000,000
EUR
|
152,000,000
EUR
|
— | — | — | — |
-
EUR
|
— | — |
152,000,000
EUR
|
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
— | — |
152,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
-
EUR
|
— | — | — |
-
EUR
|
3,000,000
EUR
|
0
EUR
|
— | — | — |
-
EUR
|
-
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — |
0
EUR
|
3,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
-
EUR
|
— | — | — |
-
EUR
|
-
EUR
|
4,000,000
EUR
|
— | — | — |
-
EUR
|
-
EUR
|
-
EUR
|
— | — |
-
EUR
|
— | — |
4,000,000
EUR
|
4,000,000
EUR
|
3,000,000
EUR
|
— | — | — | — |
-
EUR
|
— | — |
3,000,000
EUR
|
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
— | — |
3,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |