Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
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 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
As at 2020-01-01 |
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 |
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 |
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 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
226,000,000
EUR
|
— |
1 972,0
EUR
|
— |
662,000,000
EUR
|
— |
3,457,000,000
EUR
|
9,392,000,000
EUR
|
— | — |
417,000,000
EUR
|
1,150,000,000
EUR
|
1,647,000,000
EUR
|
109,000,000
EUR
|
1,003,000,000
EUR
|
3 197,3
EUR
|
— |
2 873,0
EUR
|
1,851,000,000
EUR
|
1,238,000,000
EUR
|
3,221,000,000
EUR
|
98,000,000
EUR
|
662,000,000
EUR
|
3 192,9
EUR
|
200,000,000
EUR
|
1,003,000,000
EUR
|
1,103,000,000
EUR
|
200,000,000
EUR
|
1,238,000,000
EUR
|
1,103,000,000
EUR
|
1 941,7
EUR
|
— | — |
9,313,000,000
EUR
|
3 192,9
EUR
|
— | — |
98,000,000
EUR
|
— |
3,221,000,000
EUR
|
— |
1,003,000,000
EUR
|
1,851,000,000
EUR
|
662,000,000
EUR
|
— | — |
2 811,5
EUR
|
285,000,000
EUR
|
28,400,000,000
EUR
|
270,000,000
EUR
|
2,591,000,000
EUR
|
895,000,000
EUR
|
2,033,000,000
EUR
|
660,000,000
EUR
|
1,003,000,000
EUR
|
3 052,1
EUR
|
160,000,000
EUR
|
285,000,000
EUR
|
30,806,000,000
EUR
|
648,000,000
EUR
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
9,473,000,000
EUR
|
— | — | — | — | — | — | — | — |
9,392,000,000
EUR
|
— | — | — | — | — | — | — |
81,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
73,000,000
EUR
|
— | — | — |
9,313,000,000
EUR
|
— | — | — | — |
9,386,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
805,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
60,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
8,668,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
9,326,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Issue of equity | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
373,000,000
EUR
|
— | — | — | — | — | — | — |
375,000,000
EUR
|
— | — | — |
2,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
8,805,000,000
EUR
|
— |
8,805,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
8,517,000,000
EUR
|
— |
8,517,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity |
55,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
55,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
33,000,000
EUR
|
— | — | — | — | — | — | — | — |
33,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
236,000,000
EUR
|
— |
204,000,000
EUR
|
— |
204,000,000
EUR
|
— |
236,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
257,000,000
EUR
|
— | — | — | — | — |
182,000,000
EUR
|
— |
257,000,000
EUR
|
— | — | — | — |
182,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Amount removed from reserve of cash flow hedges and included in initial cost or other carrying amount of non-financial asset (liability) or firm commitment for which fair value hedge accounting is applied |
271,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
271,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
145,000,000
EUR
|
— | — | — |
145,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Amount removed from reserve of change in value of forward elements of forward contracts and included in initial cost or other carrying amount of non-financial asset (liability) or firm commitment for which fair value hedge accounting is applied |
48,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
27,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |