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 |
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 |
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 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
46,745,000,000
EUR
|
9,210,000,000
EUR
|
— | — |
19,746,000,000
EUR
|
— | — |
17,107,000,000
EUR
|
2,639,000,000
EUR
|
52,844,000,000
EUR
|
92,000,000
EUR
|
73,364,000,000
EUR
|
— | — | — |
22,548,000,000
EUR
|
2,389,000,000
EUR
|
15,266,000,000
EUR
|
92,000,000
EUR
|
— |
7,482,000,000
EUR
|
73,472,000,000
EUR
|
— | — |
17,655,000,000
EUR
|
— | — |
73,364,000,000
EUR
|
— |
13,192,000,000
EUR
|
— |
5,574,000,000
EUR
|
694,000,000
EUR
|
— | — |
—
EUR
|
134,000,000
EUR
|
13,886,000,000
EUR
|
18,212,000,000
EUR
|
— |
420,000,000
EUR
|
15,218,000,000
EUR
|
129,000,000
EUR
|
720,000,000
EUR
|
11,397,000,000
EUR
|
12,117,000,000
EUR
|
—
EUR
|
464,000,000
EUR
|
26,022,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
572,000,000
EUR
|
— | — | — |
6,049,000,000
EUR
|
— | — | — | — | — | — | — | — |
6,621,000,000
EUR
|
6,049,000,000
EUR
|
6,073,000,000
EUR
|
— | — | — | — |
5,581,000,000
EUR
|
— | — | — | — | — |
492,000,000
EUR
|
5,581,000,000
EUR
|
— | — | — |
5,625,000,000
EUR
|
— | — |
5,625,000,000
EUR
|
401,000,000
EUR
|
— | — | — | — |
6,026,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income |
749,000,000
EUR
|
— | — |
1,448,000,000
EUR
|
9,228,000,000
EUR
|
— | — | — | — | — | — | — | — |
9,977,000,000
EUR
|
7,780,000,000
EUR
|
3,836,000,000
EUR
|
— | — | — | — |
5,776,000,000
EUR
|
— | — |
2,226,000,000
EUR
|
— | — |
286,000,000
EUR
|
3,550,000,000
EUR
|
— |
183,000,000
EUR
|
— |
6,162,000,000
EUR
|
— | — |
5,979,000,000
EUR
|
407,000,000
EUR
|
— | — | — | — |
6,569,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
—
EUR
|
— | — | — | — |
51,000,000
EUR
|
— | — | — |
51,000,000
EUR
|
— | — |
—
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — |
4,458,000,000
EUR
|
— | — | — | — | — | — | — | — |
4,458,000,000
EUR
|
4,458,000,000
EUR
|
4,300,000,000
EUR
|
— | — | — | — |
4,300,000,000
EUR
|
— | — | — | — | — | — |
4,300,000,000
EUR
|
— | — | — |
4,223,000,000
EUR
|
— | — |
4,223,000,000
EUR
|
— | — | — | — | — |
4,223,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
7,000,000
EUR
|
— | — |
82,000,000
EUR
|
147,000,000
EUR
|
— |
2,000,000
EUR
|
82,000,000
EUR
|
— | — | — | — | — |
154,000,000
EUR
|
231,000,000
EUR
|
232,000,000
EUR
|
— | — | — | — |
236,000,000
EUR
|
— | — |
44,000,000
EUR
|
— | — |
48,000,000
EUR
|
280,000,000
EUR
|
— |
51,000,000
EUR
|
— |
127,000,000
EUR
|
— | — |
76,000,000
EUR
|
2,000,000
EUR
|
— | — | — | — |
125,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — | — | — | — | — | — | — | — | — | — |
3,018,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — |
161,000,000
EUR
|
— | — | — | — | — | — | — | — |
161,000,000
EUR
|
161,000,000
EUR
|
108,000,000
EUR
|
— | — | — | — |
108,000,000
EUR
|
— | — | — | — | — | — |
108,000,000
EUR
|
— | — | — |
151,000,000
EUR
|
— | — |
151,000,000
EUR
|
— | — | — | — | — |
151,000,000
EUR
|
— | — | — | — | — | — | — | — | — |