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 |
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 |
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 |
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 |
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 |
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 | — |
3,795,000,000
EUR
|
1 654,7
EUR
|
11 489,7
EUR
|
— | — |
13 736,2
EUR
|
1,652,000,000
EUR
|
— | — |
13 346,8
EUR
|
3,894,000,000
EUR
|
821,000,000
EUR
|
4,988,000,000
EUR
|
— | — | — |
9 438,0
EUR
|
2,141,000,000
EUR
|
— | — |
5,001,000,000
EUR
|
11 820,9
EUR
|
— |
3,623,000,000
EUR
|
539,000,000
EUR
|
2,882,000,000
EUR
|
12 035,0
EUR
|
— | — |
1 862,6
EUR
|
— |
10 278,1
EUR
|
1,605,000,000
EUR
|
1,745,000,000
EUR
|
801,000,000
EUR
|
2 428,4
EUR
|
10 438,6
EUR
|
8 170,0
EUR
|
5,708,000,000
EUR
|
5,051,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
802,000,000
EUR
|
— | — | — | — |
3 175,7
EUR
|
— | — | — | — | — | — | — | — |
3 255,9
EUR
|
3 175,7
EUR
|
2 179,9
EUR
|
— | — | — | — | — | — |
2 150,4
EUR
|
— | — | — | — | — |
295,000,000
EUR
|
— |
2 150,4
EUR
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income |
142,000,000
EUR
|
— | — | — | — |
252,000,000
EUR
|
— | — |
1,971,000,000
EUR
|
2,061,000,000
EUR
|
— | — | — | — |
394,000,000
EUR
|
162,000,000
EUR
|
3,228,000,000
EUR
|
— | — |
4,424,000,000
EUR
|
— | — | — |
46,000,000
EUR
|
— | — | — | — |
1,137,000,000
EUR
|
105,000,000
EUR
|
— |
3,333,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income |
944,000,000
EUR
|
— | — | — | — |
3 200,9
EUR
|
— | — |
1,971,000,000
EUR
|
2,061,000,000
EUR
|
— | — | — | — |
3 295,3
EUR
|
3 191,9
EUR
|
2 502,7
EUR
|
— | — |
4,424,000,000
EUR
|
— | — | — |
2 155,0
EUR
|
— | — | — | — |
1,137,000,000
EUR
|
190,000,000
EUR
|
— |
2 483,7
EUR
|
— | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
233,000,000
EUR
|
— | — | — | — |
1 122,3
EUR
|
— | — | — | — | — | — | — | — |
1 145,6
EUR
|
1 122,3
EUR
|
8,808,000,000
EUR
|
— | — | — | — | — | — |
8,707,000,000
EUR
|
— | — | — | — | — |
101,000,000
EUR
|
— |
8,707,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
97,000,000
EUR
|
— | — | — | — |
350,000,000
EUR
|
— | — | — | — | — | — | — | — |
253,000,000
EUR
|
350,000,000
EUR
|
58,000,000
EUR
|
— | — | — | — | — | — |
251,000,000
EUR
|
— | — | — | — | — |
193,000,000
EUR
|
— |
251,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
-
EUR
|
— | — | — |
5,348,000,000
EUR
|
5,383,000,000
EUR
|
— | — | — | — | — | — | — | — |
5,383,000,000
EUR
|
35,000,000
EUR
|
541,000,000
EUR
|
— | — | — |
539,000,000
EUR
|
— | — |
2,000,000
EUR
|
— | — | — | — | — |
-
EUR
|
— |
541,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
-
EUR
|
— | — | — | — |
206,000,000
EUR
|
— | — | — | — | — | — | — | — |
206,000,000
EUR
|
206,000,000
EUR
|
90,000,000
EUR
|
— | — | — | — | — | — |
90,000,000
EUR
|
— | — | — | — | — |
-
EUR
|
— |
90,000,000
EUR
|
— | — | — | — | — | — | — | — | — |