Statement Of Financial Position [Abstract]
| Concept |
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 |
As at 2020-12-31 |
As at 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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | — |
2 838,7
EUR
|
— | — | — | — | — | — | — | — |
2 387,3
EUR
|
— | — | — | — | — | — | — | — |
| Goodwill | — | — | — | — | — | — | — |
7,000,000
EUR
|
— | — | — | — | — | — | — | — |
7,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — | — | — | — | — |
2,087,000,000
EUR
|
— | — | — | — | — | — | — | — |
1,833,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — | — | — |
73,000,000
EUR
|
— | — | — | — | — | — | — | — |
69,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — | — |
622,000,000
EUR
|
— | — | — | — | — | — | — | — |
556,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — |
3,749,000,000
EUR
|
— | — | — |
4,605,000,000
EUR
|
— | — | — | — |
4,605,000,000
EUR
|
— | — | — | — |
5,038,000,000
EUR
|
— | — | — |
| Assets | — | — | — | — | — | — | — |
3 777,1
EUR
|
— | — | — | — | — | — | — | — |
3 385,7
EUR
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — | — |
1,711,000,000
EUR
|
— | — | — | — | — | — | — | — |
1,702,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Share premium | — | — | — | — | — | — | — |
5,023,000,000
EUR
|
— | — | — | — | — | — | — | — |
5,010,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Treasury shares | — | — | — | — | — | — | — |
4,000,000
EUR
|
— | — | — | — | — | — | — | — |
38,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — | — |
6,368,000,000
EUR
|
— | — | — | — | — | — | — | — |
6,610,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — | — |
48,000,000
EUR
|
— | — | — | — | — | — | — | — |
195,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Equity |
48,000,000
EUR
|
6,368,000,000
EUR
|
1,711,000,000
EUR
|
1,441,000,000
EUR
|
1,080,000,000
EUR
|
4,000,000
EUR
|
5,023,000,000
EUR
|
6,416,000,000
EUR
|
38,000,000
EUR
|
916,000,000
EUR
|
1,702,000,000
EUR
|
6,805,000,000
EUR
|
195,000,000
EUR
|
852,000,000
EUR
|
5,010,000,000
EUR
|
6,610,000,000
EUR
|
6,805,000,000
EUR
|
27,000,000
EUR
|
1,699,000,000
EUR
|
529,000,000
EUR
|
5,008,000,000
EUR
|
6,553,000,000
EUR
|
301,000,000
EUR
|
101,000,000
EUR
|
6,451,000,000
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||||||
| Deferred tax liabilities | — | — | — | — | — | — | — |
533,000,000
EUR
|
— | — | — | — | — | — | — | — |
496,000,000
EUR
|
— | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — | — |
3 777,1
EUR
|
— | — | — | — | — | — | — | — |
3 385,7
EUR
|
— | — | — | — | — | — | — | — |