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] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — |
7,192,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
6,809,000,000
EUR
|
— | — | — | — | — | — | — |
| Right-of-use assets | — |
2,684,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
2,683,000,000
EUR
|
— | — | — | — | — | — | — |
| Goodwill | — |
5 241,2
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
4 803,7
EUR
|
— | — | — | — | — | — | — |
| Intangible assets other than goodwill | — |
2 485,3
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
2 441,6
EUR
|
— | — | — | — | — | — | — |
| Investments accounted for using equity method | — |
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
0
EUR
|
— | — | — | — | — | — | — |
| Deferred tax assets | — |
1,163,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1,124,000,000
EUR
|
— | — | — | — | — | — | — |
| Non-current assets | — |
8 895,4
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
8 357,8
EUR
|
— | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Other current financial assets | — |
64,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
15,000,000
EUR
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — |
2 788,3
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
2 791,7
EUR
|
— | — | — | — |
1 710,9
EUR
|
— | — |
| Current assets | — |
5 131,4
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
4 549,9
EUR
|
— | — | — | — | — | — | — |
| Assets | — |
14 026,8
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
12 907,7
EUR
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — |
1 069,8
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1 069,8
EUR
|
— | — | — | — | — | — | — |
| Retained earnings | — |
5 268,5
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
4 788,3
EUR
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — |
5 716,5
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
4 895,8
EUR
|
— | — | — | — | — | — | — |
| Non-controlling interests | — |
38,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
102,000,000
EUR
|
— | — | — | — | — | — | — |
| Equity |
5 336,1
EUR
|
5 720,3
EUR
|
676,000,000
EUR
|
5 716,5
EUR
|
38,000,000
EUR
|
6,218,000,000
EUR
|
1 069,8
EUR
|
4 881,2
EUR
|
102,000,000
EUR
|
4 895,8
EUR
|
1 069,8
EUR
|
929,000,000
EUR
|
9,623,000,000
EUR
|
4 906,0
EUR
|
5 102,2
EUR
|
99,000,000
EUR
|
892,000,000
EUR
|
4,535,000,000
EUR
|
5 112,1
EUR
|
4 575,8
EUR
|
1 069,1
EUR
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||
| Non-current provisions for employee benefits | — |
1,707,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1,818,000,000
EUR
|
— | — | — | — | — | — | — |
| Other non-current provisions | — |
1,966,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
2,002,000,000
EUR
|
— | — | — | — | — | — | — |
| Deferred tax liabilities | — |
8,665,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
7,912,000,000
EUR
|
— | — | — | — | — | — | — |
| Non-current liabilities | — |
5 719,7
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
5 247,0
EUR
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||
| Current provisions | — |
1,358,000,000
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
1,279,000,000
EUR
|
— | — | — | — | — | — | — |
| Other current financial liabilities | — |
0
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
11,000,000
EUR
|
— | — | — | — | — | — | — |
| Current liabilities | — |
2 586,8
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
2 754,7
EUR
|
— | — | — | — | — | — | — |
| Equity and liabilities | — |
14 026,8
EUR
|
— | — | — | — | — | — | — | — | — | — | — |
12 907,7
EUR
|
— | — | — | — | — | — | — |