Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 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 |
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 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 |
As at 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
232,000,000
EUR
|
5 467
EUR
|
— | — |
8 851
EUR
|
1 786
EUR
|
— |
3,000,000
EUR
|
5 982
EUR
|
23,000,000
EUR
|
— | — | — |
421,000,000
EUR
|
1 170
EUR
|
112,000,000
EUR
|
645,000,000
EUR
|
1 588
EUR
|
— | — | — |
4 985
EUR
|
106,000,000
EUR
|
14,000,000
EUR
|
— | — |
1 588
EUR
|
— | — |
1 786
EUR
|
4 439
EUR
|
— |
919,000,000
EUR
|
— |
286,000,000
EUR
|
1 153
EUR
|
1 170
EUR
|
12,000,000
EUR
|
7 304
EUR
|
— | — |
1 789
EUR
|
274,000,000
EUR
|
6 462
EUR
|
454,000,000
EUR
|
10,000,000
EUR
|
1 588
EUR
|
1 170
EUR
|
6 757
EUR
|
111,000,000
EUR
|
9 625
EUR
|
21,000,000
EUR
|
756,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
41,000,000
EUR
|
— | — | — | — | — | — |
948,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
989,000,000
EUR
|
948,000,000
EUR
|
929,000,000
EUR
|
— | — | — | — | — | — | — |
962,000,000
EUR
|
— | — |
962,000,000
EUR
|
— | — | — | — | — | — | — | — |
33,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
9,000,000
EUR
|
— | — |
11,000,000
EUR
|
— | — | — |
1 008
EUR
|
— | — | — |
486,000,000
EUR
|
508,000,000
EUR
|
25,000,000
EUR
|
— | — | — | — | — |
1 017
EUR
|
— |
837,000,000
EUR
|
— | — | — |
169,000,000
EUR
|
— | — |
1,000,000
EUR
|
— | — | — |
831,000,000
EUR
|
— |
35,000,000
EUR
|
— | — | — | — | — |
699,000,000
EUR
|
6,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
50,000,000
EUR
|
— | — |
11,000,000
EUR
|
— | — | — |
1 956
EUR
|
— | — | — |
486,000,000
EUR
|
508,000,000
EUR
|
25,000,000
EUR
|
— | — | — | — | — |
2 006
EUR
|
948,000,000
EUR
|
1 766
EUR
|
— | — | — |
169,000,000
EUR
|
— | — |
1,000,000
EUR
|
962,000,000
EUR
|
— | — |
1 793
EUR
|
— |
35,000,000
EUR
|
— | — | — | — | — |
699,000,000
EUR
|
27,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
43,000,000
EUR
|
— | — | — | — | — | — |
389,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
432,000,000
EUR
|
389,000,000
EUR
|
417,000,000
EUR
|
— | — | — | — | — | — | — |
387,000,000
EUR
|
— | — |
387,000,000
EUR
|
— | — | — | — | — | — | — | — |
31,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
2,000,000
EUR
|
— | — |
0
EUR
|
— | — | — |
1,000,000
EUR
|
— | — | — |
12,000,000
EUR
|
0
EUR
|
14,000,000
EUR
|
— | — | — | — | — |
1,000,000
EUR
|
2,000,000
EUR
|
1,000,000
EUR
|
— | — | — |
5,000,000
EUR
|
— | — | — |
6,000,000
EUR
|
— | — |
1,000,000
EUR
|
— | — | — | — | — | — | — | — |
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — |
54,000,000
EUR
|
— | — |
42,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
42,000,000
EUR
|
12,000,000
EUR
|
19,000,000
EUR
|
— | — | — | — |
12,000,000
EUR
|
— | — |
7,000,000
EUR
|
— | — |
19,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — | — | — | — |
8,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
8,000,000
EUR
|
8,000,000
EUR
|
7,000,000
EUR
|
— | — | — | — | — | — | — |
7,000,000
EUR
|
— | — |
7,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |