Statement Of Financial Position [Abstract]
| Concept |
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 |
As at 2021-12-31 |
As at 2021-12-31 |
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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — | — |
4,870,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
4,641,000,000
EUR
|
— | — | — | — | — | — | — |
| Goodwill | — | — | — |
926,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
923,000,000
EUR
|
— | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — |
76,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
70,000,000
EUR
|
— | — | — | — | — | — | — |
| Current tax assets | — | — | — |
12,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
11,000,000
EUR
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
43,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
39,000,000
EUR
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
473,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
382,000,000
EUR
|
— | — | — | — | — | — | — |
| Assets | — | — | — |
9,261,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
8,367,000,000
EUR
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — |
97,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
97,000,000
EUR
|
— | — | — | — | — | — | — |
| Retained earnings | — | — | — |
4,760,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
4,300,000,000
EUR
|
— | — | — | — | — | — | — |
| Treasury shares | — | — | — |
18,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
18,000,000
EUR
|
— | — | — | — | — | — | — |
| Other reserves | — | — | — |
341,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
377,000,000
EUR
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — |
4,498,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
4,002,000,000
EUR
|
— | — | — | — | — | — | — |
| Non-controlling interests | — | — | — |
391,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
380,000,000
EUR
|
— | — | — | — | — | — | — |
| Equity |
18,000,000
EUR
|
4,760,000,000
EUR
|
341,000,000
EUR
|
4,889,000,000
EUR
|
4,498,000,000
EUR
|
391,000,000
EUR
|
97,000,000
EUR
|
4,300,000,000
EUR
|
380,000,000
EUR
|
4,002,000,000
EUR
|
97,000,000
EUR
|
18,000,000
EUR
|
377,000,000
EUR
|
4,382,000,000
EUR
|
4,015,000,000
EUR
|
370,000,000
EUR
|
20,000,000
EUR
|
4,385,000,000
EUR
|
3,963,000,000
EUR
|
25,000,000
EUR
|
97,000,000
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||
| Current tax liabilities | — | — | — |
116,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
85,000,000
EUR
|
— | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — |
283,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
278,000,000
EUR
|
— | — | — | — | — | — | — |
| Liabilities | — | — | — |
4,372,000,000
EUR
|
— | — | — | — | — | — | — | — | — |
3,985,000,000
EUR
|
— | — | — | — | — | — | — |