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 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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | — |
8 084
EUR
|
— | — | — |
7 930
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Investment property | — | — | — | — | — | — | — |
502,000,000
EUR
|
— | — | — |
510,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — | — | — |
1 943
EUR
|
— | — | — |
1 019
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — | — |
46,000,000
EUR
|
— | — | — |
37,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial assets | — | — | — | — | — | — | — |
374,000,000
EUR
|
— | — | — |
682,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — | — |
13 744
EUR
|
— | — | — |
13 482
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories | — | — | — | — | — | — | — |
70,000,000
EUR
|
— | — | — |
94,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current tax assets, current | — | — | — | — | — | — | — |
85,000,000
EUR
|
— | — | — |
65,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial assets | — | — | — | — | — | — | — |
169,000,000
EUR
|
— | — | — |
176,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other current non-financial assets | — | — | — | — | — | — | — |
467,000,000
EUR
|
— | — | — |
382,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — |
3 463
EUR
|
— | — | — |
1 982
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners | — | — | — | — | — | — | — |
4 826
EUR
|
— | — | — |
3 311
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — | — |
18 570
EUR
|
— | — | — |
16 793
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — | — |
297,000,000
EUR
|
— | — | — |
297,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — | — | — | — |
543,000,000
EUR
|
— | — | — |
543,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Treasury shares | — | — | — | — | — | — | — |
3,000,000
EUR
|
— | — | — |
-
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — | — |
3 652
EUR
|
— | — | — |
5 032
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — | — |
561,000,000
EUR
|
— | — | — |
975,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
561,000,000
EUR
|
3 652
EUR
|
297,000,000
EUR
|
349,000,000
EUR
|
3,000,000
EUR
|
543,000,000
EUR
|
3 164
EUR
|
4 213
EUR
|
5 032
EUR
|
975,000,000
EUR
|
543,000,000
EUR
|
6 007
EUR
|
149,000,000
EUR
|
-
EUR
|
4 341
EUR
|
297,000,000
EUR
|
543,000,000
EUR
|
951,000,000
EUR
|
4 850
EUR
|
-
EUR
|
5 801
EUR
|
4 096
EUR
|
86,000,000
EUR
|
297,000,000
EUR
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||
| Non-current provisions for employee benefits | — | — | — | — | — | — | — |
644,000,000
EUR
|
— | — | — |
511,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current provisions | — | — | — | — | — | — | — |
97,000,000
EUR
|
— | — | — |
47,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — | — |
89,000,000
EUR
|
— | — | — |
371,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current non-financial liabilities | — | — | — | — | — | — | — |
797,000,000
EUR
|
— | — | — |
798,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — | — |
10 997
EUR
|
— | — | — |
7 804
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||||||||
| Current provisions for employee benefits | — | — | — | — | — | — | — |
104,000,000
EUR
|
— | — | — |
14,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other current provisions | — | — | — | — | — | — | — |
6,000,000
EUR
|
— | — | — |
5,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables | — | — | — | — | — | — | — |
682,000,000
EUR
|
— | — | — |
679,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other current non-financial liabilities | — | — | — | — | — | — | — |
958,000,000
EUR
|
— | — | — |
812,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities included in disposal groups classified as held for sale | — | — | — | — | — | — | — |
3 360
EUR
|
— | — | — |
2 982
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — | — |
18 570
EUR
|
— | — | — |
16 793
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — |