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 |
2021-01-01 to 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 |
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 |
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 |
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 |
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 |
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 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
1,699,200
EUR
|
1,311,000,000
EUR
|
— | — | — |
5,168,900
EUR
|
— |
45,000,000
EUR
|
32,000,000
EUR
|
38,000,000
EUR
|
— | — |
3,540,000,000
EUR
|
— |
5,177,100
EUR
|
3,826,400
EUR
|
— |
1,218,000,000
EUR
|
83,000,000
EUR
|
— | — | — |
1,184,600
EUR
|
131,000,000
EUR
|
12,000,000
EUR
|
— |
4,284,000
EUR
|
1,311,000,000
EUR
|
— | — |
28,000,000
EUR
|
— |
5,049,000,000
EUR
|
— |
3,503,000,000
EUR
|
3,825,800
EUR
|
— |
4,270,800
EUR
|
— | — | — |
16,000,000
EUR
|
— |
3,567,500
EUR
|
92,000,000
EUR
|
3,993,000,000
EUR
|
1,435,000,000
EUR
|
3,558,400
EUR
|
3,034,700
EUR
|
9,752,000,000
EUR
|
0
EUR
|
8,000,000
EUR
|
168,000,000
EUR
|
1,180,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Other comprehensive income |
61,000,000
EUR
|
— | — |
33,000,000
EUR
|
3,780,000,000
EUR
|
4,000,000
EUR
|
— | — | — | — | — |
1,509,000,000
EUR
|
2,285,000,000
EUR
|
— |
22,000,000
EUR
|
— | — | — | — | — |
3,841,000,000
EUR
|
— |
2,948,000,000
EUR
|
— | — | — |
1,056,000,000
EUR
|
— | — | — |
20,000,000
EUR
|
— |
16,000,000
EUR
|
— |
156,000,000
EUR
|
— | — | — | — |
2,068,000,000
EUR
|
25,000,000
EUR
|
— | — |
2,973,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
58,000,000
EUR
|
— | — |
33,000,000
EUR
|
9,463,000,000
EUR
|
4,000,000
EUR
|
— |
0
EUR
|
— | — | — |
1,509,000,000
EUR
|
2,285,000,000
EUR
|
— |
22,000,000
EUR
|
— | — |
0
EUR
|
— | — |
9,521,000,000
EUR
|
5,683,000,000
EUR
|
839,000,000
EUR
|
— | — | — |
1,056,000,000
EUR
|
— | — |
2,153,000,000
EUR
|
20,000,000
EUR
|
— |
16,000,000
EUR
|
— |
156,000,000
EUR
|
— | — |
0
EUR
|
— |
2,068,000,000
EUR
|
19,000,000
EUR
|
0
EUR
|
— |
819,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
8,133,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
131,000,000
EUR
|
— | — |
0
EUR
|
8,002,000,000
EUR
|
— |
8,133,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
0
EUR
|
— | — | — |
537,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
537,000,000
EUR
|
537,000,000
EUR
|
47,000,000
EUR
|
— | — | — | — | — | — |
47,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
0
EUR
|
— | — |
47,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
12,000,000
EUR
|
— | — | — | — | — | — |
12,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — |
0
EUR
|
— | — |
12,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
7,000,000
EUR
|
— | — | — |
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
7,000,000
EUR
|
— |
14,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
14,000,000
EUR
|
— | — |
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
0
EUR
|
— | — | — |
6,000,000
EUR
|
— | — |
6,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
0
EUR
|
— | — |
6,000,000
EUR
|
— |
12,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
0
EUR
|
— | — |
0
EUR
|
12,000,000
EUR
|
— |
12,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |