Statement Of Comprehensive Income [Abstract]
| Concept |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) |
-
EUR
|
5,238,000,000
EUR
|
2,160,000,000
EUR
|
3,077,000,000
EUR
|
-
EUR
|
-
EUR
|
3,077,000,000
EUR
|
-
EUR
|
2,337,000,000
EUR
|
-
EUR
|
2,337,000,000
EUR
|
2,355,000,000
EUR
|
18,000,000
EUR
|
-
EUR
|
| Other comprehensive income [abstract] | ||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans |
-
EUR
|
3,000,000
EUR
|
0
EUR
|
3,000,000
EUR
|
-
EUR
|
-
EUR
|
3,000,000
EUR
|
-
EUR
|
7,000,000
EUR
|
-
EUR
|
7,000,000
EUR
|
7,000,000
EUR
|
0
EUR
|
-
EUR
|
| Other comprehensive income that will not be reclassified to profit or loss, net of tax | — |
3,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
7,000,000
EUR
|
— | — |
| Comprehensive income |
-
EUR
|
5,235,000,000
EUR
|
2,160,000,000
EUR
|
3,074,000,000
EUR
|
-
EUR
|
-
EUR
|
3,074,000,000
EUR
|
-
EUR
|
2,330,000,000
EUR
|
-
EUR
|
2,330,000,000
EUR
|
2,348,000,000
EUR
|
18,000,000
EUR
|
-
EUR
|
| Comprehensive income attributable to [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — |
3,074,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
2,330,000,000
EUR
|
— | — |