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 |
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 |
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 |
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 |
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 |
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 | — |
1 906
EUR
|
— |
4 491
EUR
|
— | — |
3 695
EUR
|
1 560
EUR
|
— |
14,000,000
EUR
|
243,000,000
EUR
|
796,000,000
EUR
|
— | — | — |
1 727
EUR
|
756,000,000
EUR
|
3 243
EUR
|
242,000,000
EUR
|
— |
271,000,000
EUR
|
1 545
EUR
|
— |
3 999
EUR
|
— | — | — | — |
4 646
EUR
|
241,000,000
EUR
|
4 629
EUR
|
835,000,000
EUR
|
5 464
EUR
|
835,000,000
EUR
|
71,000,000
EUR
|
5 481
EUR
|
71,000,000
EUR
|
1 531
EUR
|
2 803
EUR
|
1 531
EUR
|
17,000,000
EUR
|
241,000,000
EUR
|
17,000,000
EUR
|
17,000,000
EUR
|
2 786
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
70,000,000
EUR
|
— |
175,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
245,000,000
EUR
|
175,000,000
EUR
|
1 070
EUR
|
— | — | — | — |
1 089
EUR
|
— | — | — | — | — |
19,000,000
EUR
|
— |
1 089
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
16,000,000
EUR
|
— |
317,000,000
EUR
|
— | — |
257,000,000
EUR
|
— | — | — | — | — | — |
333,000,000
EUR
|
60,000,000
EUR
|
352,000,000
EUR
|
— | — | — | — |
18,000,000
EUR
|
— | — | — | — |
342,000,000
EUR
|
28,000,000
EUR
|
— |
324,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
86,000,000
EUR
|
— |
492,000,000
EUR
|
— | — |
257,000,000
EUR
|
— | — | — | — | — | — |
578,000,000
EUR
|
235,000,000
EUR
|
1 422
EUR
|
— | — | — | — |
1 071
EUR
|
— | — | — | — |
342,000,000
EUR
|
9,000,000
EUR
|
— |
1 413
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Issue of equity | — | — |
16,000,000
EUR
|
— |
15,000,000
EUR
|
— | — | — |
1,000,000
EUR
|
— | — | — |
16,000,000
EUR
|
— |
15,000,000
EUR
|
— | — | — | — | — | — | — |
1,000,000
EUR
|
— | — | — |
14,000,000
EUR
|
15,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
37,000,000
EUR
|
— |
72,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
109,000,000
EUR
|
72,000,000
EUR
|
123,000,000
EUR
|
— | — | — | — |
48,000,000
EUR
|
— | — | — | — | — |
75,000,000
EUR
|
— |
48,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
9,000,000
EUR
|
— |
13,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
22,000,000
EUR
|
13,000,000
EUR
|
—
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — | — | — | — | — | — | — | — | — |
—
EUR
|
— |
4,000,000
EUR
|
— | — | — | — |
4,000,000
EUR
|
— | — | — | — | — | — | — |
4,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — |
28,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
28,000,000
EUR
|
28,000,000
EUR
|
33,000,000
EUR
|
— | — | — | — |
33,000,000
EUR
|
— | — | — | — | — | — | — |
33,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |