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 |
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 |
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 |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
22,000,000
EUR
|
293,000,000
EUR
|
930,000,000
EUR
|
— | — |
3 552
EUR
|
878,000,000
EUR
|
218,000,000
EUR
|
4 430
EUR
|
149,000,000
EUR
|
— | — | — |
122,000,000
EUR
|
4 790
EUR
|
717,000,000
EUR
|
149,000,000
EUR
|
— |
22,000,000
EUR
|
940,000,000
EUR
|
218,000,000
EUR
|
— |
4 073
EUR
|
— | — | — | — | — | — | — |
6 010
EUR
|
6 401
EUR
|
358,000,000
EUR
|
6 368
EUR
|
770,000,000
EUR
|
149,000,000
EUR
|
6 057
EUR
|
218,000,000
EUR
|
81,000,000
EUR
|
776,000,000
EUR
|
22,000,000
EUR
|
22,000,000
EUR
|
149,000,000
EUR
|
344,000,000
EUR
|
218,000,000
EUR
|
73,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
224,000,000
EUR
|
— | — | — | — |
167,000,000
EUR
|
— | — | — | — | — |
391,000,000
EUR
|
167,000,000
EUR
|
496,000,000
EUR
|
— | — | — | — |
195,000,000
EUR
|
— | — | — | — | — | — |
301,000,000
EUR
|
— | — |
195,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
85,000,000
EUR
|
— | — | — |
2,000,000
EUR
|
2,000,000
EUR
|
— | — | — | — | — |
87,000,000
EUR
|
— |
1 377
EUR
|
— | — | — | — | — | — | — | — |
171,000,000
EUR
|
— | — |
1 206
EUR
|
— | — |
171,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
309,000,000
EUR
|
— | — | — |
2,000,000
EUR
|
169,000,000
EUR
|
— | — | — | — | — |
478,000,000
EUR
|
167,000,000
EUR
|
1 873
EUR
|
— | — | — | — |
195,000,000
EUR
|
— | — | — |
171,000,000
EUR
|
— | — |
1 507
EUR
|
— | — |
366,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
69,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
69,000,000
EUR
|
— |
80,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
80,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
36,000,000
EUR
|
— | — | — |
12,000,000
EUR
|
14,000,000
EUR
|
— | — | — | — | — |
50,000,000
EUR
|
2,000,000
EUR
|
5,000,000
EUR
|
— | — | — | — | — | — | — | — |
1,000,000
EUR
|
— |
6,000,000
EUR
|
4,000,000
EUR
|
14,000,000
EUR
|
8,000,000
EUR
|
1,000,000
EUR
|
47,000,000
EUR
|
33,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — | — |
-
EUR
|
— | — | — | — | — |
-
EUR
|
— |
1,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
18,000,000
EUR
|
— | — | — | — |
6,000,000
EUR
|
— | — | — | — | — |
24,000,000
EUR
|
6,000,000
EUR
|
35,000,000
EUR
|
— | — | — | — |
8,000,000
EUR
|
— | — | — | — | — | — |
27,000,000
EUR
|
— | — |
8,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |