Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
2020-01-01 to 2020-12-31 |
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 |
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 |
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 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 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 |
As at 2018-12-31 |
2018-01-01 to 2018-12-31 |
As at 2018-12-31 |
2018-01-01 to 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
2018-01-01 to 2018-12-31 |
2018-01-01 to 2018-12-31 |
2018-01-01 to 2018-12-31 |
2018-01-01 to 2018-12-31 |
As at 2018-12-31 |
2018-01-01 to 2018-12-31 |
2018-01-01 to 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 2017-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
As at 2017-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
7,828,000,000
EUR
|
31,000,000
EUR
|
23,000,000
EUR
|
11,870,000,000
EUR
|
182,000,000
EUR
|
— | — | — |
199,000,000
EUR
|
58,000,000
EUR
|
4,400,000,000
EUR
|
11,901,000,000
EUR
|
— | — |
305,000,000
EUR
|
— | — |
12,597,000,000
EUR
|
— | — |
28,000,000
EUR
|
978,000,000
EUR
|
— | — |
12,055,000,000
EUR
|
12,625,000,000
EUR
|
3,671,000,000
EUR
|
12,084,000,000
EUR
|
8,296,000,000
EUR
|
303,000,000
EUR
|
8,232,000,000
EUR
|
— |
201,000,000
EUR
|
— |
24,000,000
EUR
|
— |
179,000,000
EUR
|
— |
10,000,000
EUR
|
3,487,000,000
EUR
|
12,088,000,000
EUR
|
29,000,000
EUR
|
399,000,000
EUR
|
399,000,000
EUR
|
185,000,000
EUR
|
3,487,000,000
EUR
|
29,000,000
EUR
|
— |
739,000,000
EUR
|
— |
181,000,000
EUR
|
12,117,000,000
EUR
|
— | — | — | — |
739,000,000
EUR
|
— | — |
181,000,000
EUR
|
10,000,000
EUR
|
185,000,000
EUR
|
8,266,000,000
EUR
|
392,000,000
EUR
|
11,993,000,000
EUR
|
481,000,000
EUR
|
3,311,000,000
EUR
|
11,970,000,000
EUR
|
23,000,000
EUR
|
24,000,000
EUR
|
34,000,000
EUR
|
8,571,000,000
EUR
|
188,000,000
EUR
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
1,195,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,173,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,097,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
953,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
340,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
136,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
242,000,000
EUR
|
— | — | — | — | — |
1,225,000,000
EUR
|
-
EUR
|
46,000,000
EUR
|
— | — | — | — |
1,036,000,000
EUR
|
6,000,000
EUR
|
— | — |
235,000,000
EUR
|
— |
239,000,000
EUR
|
1,507,000,000
EUR
|
— | — |
1,200,000,000
EUR
|
5,000,000
EUR
|
— | — | — | — | — | — | — |
1,512,000,000
EUR
|
— |
82,000,000
EUR
|
— |
13,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
147,000,000
EUR
|
— |
1,225,000,000
EUR
|
— | — | — |
1,058,000,000
EUR
|
1,233,000,000
EUR
|
347,000,000
EUR
|
— |
8,000,000
EUR
|
33,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
116,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
116,000,000
EUR
|
116,000,000
EUR
|
— | — |
101,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
101,000,000
EUR
|
— | — | — | — | — |
101,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
107,000,000
EUR
|
— | — |
107,000,000
EUR
|
— |
107,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |