Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-01-01 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-01-01 |
|---|---|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||||
| Property, plant and equipment [abstract] | ||||||||
| Property, plant and equipment |
7,100,000,000
EUR
|
— | — | — | — | — |
7,422,000,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | ||||||||
| Intangible assets other than goodwill [abstract] | ||||||||
| Intangible assets other than goodwill |
2,232,000,000
EUR
|
— | — | — | — | — |
2,482,000,000
EUR
|
— |
| Goodwill |
1 327,0
EUR
|
— | — | — | — | — |
1 366,5
EUR
|
— |
| Trade and other current receivables [abstract] | ||||||||
| Current trade receivables |
2 178,6
EUR
|
— | — | — | — | — |
2 232,3
EUR
|
— |
| Categories of non-current financial assets [abstract] | ||||||||
| Non-current loans and receivables |
10,000,000
EUR
|
— | — | — | — | — |
8,000,000
EUR
|
— |
| Categories of financial assets [abstract] | ||||||||
| Financial assets at fair value through other comprehensive income [abstract] | ||||||||
| Financial assets at fair value through other comprehensive income |
1,432,000,000
EUR
|
— | — | — | — | — |
1,392,000,000
EUR
|
— |
| Classes of current inventories [abstract] | ||||||||
| Current inventories |
5,970,000,000
EUR
|
— | — | — | — | — |
6,486,000,000
EUR
|
— |
| Classes of current inventories, alternative [abstract] | ||||||||
| Cash and cash equivalents [abstract] | ||||||||
| Cash and cash equivalents |
4,579,000,000
EUR
|
— | — |
6,624,000,000
EUR
|
— | — |
6,624,000,000
EUR
|
6,360,000,000
EUR
|
| Miscellaneous assets [abstract] | ||||||||
| Net defined benefit asset |
192,000,000
EUR
|
— | — | — | — | — |
217,000,000
EUR
|
— |
| Borrowings [abstract] | ||||||||
| Current borrowings and current portion of non-current borrowings [abstract] | ||||||||
| Current borrowings |
56,000,000
EUR
|
— | — | — | — | — |
179,000,000
EUR
|
— |
| Current portion of non-current borrowings |
2,589,000,000
EUR
|
— | — | — | — | — |
1,037,000,000
EUR
|
— |
| Trade and other current payables [abstract] | ||||||||
| Current trade payables |
8,909,000,000
EUR
|
— | — | — | — | — |
8,098,000,000
EUR
|
— |
| Trade and other payables [abstract] | ||||||||
| Accruals and deferred income including contract liabilities [abstract] | ||||||||
| Accruals |
1 882,6
EUR
|
— | — | — | — | — |
1 725,0
EUR
|
— |
| Miscellaneous non-current liabilities [abstract] | ||||||||
| Non-current net defined benefit liability |
1,872,000,000
EUR
|
— | — | — | — | — |
1,729,000,000
EUR
|
— |
| Issued capital [abstract] | ||||||||
| Issued capital |
662,000,000
EUR
|
— | — | — | — | — |
662,000,000
EUR
|
— |
| Retained earnings [abstract] | ||||||||
| Retained earnings |
2 746,6
EUR
|
— | — | — | — | — |
2 687,9
EUR
|
— |
| Accumulated other comprehensive income [abstract] | ||||||||
| Reserve of exchange differences on translation |
1,732,000,000
EUR
|
1,732,000,000
EUR
|
— | — | — |
540,000,000
EUR
|
540,000,000
EUR
|
— |
| Reserve of remeasurements of defined benefit plans |
88,000,000
EUR
|
— |
88,000,000
EUR
|
— |
343,000,000
EUR
|
— |
343,000,000
EUR
|
— |
| Net assets (liabilities) [abstract] | ||||||||
| Assets |
8 792,0
EUR
|
— | — | — | — | — |
8 613,3
EUR
|
— |
| Net current assets (liabilities) [abstract] | ||||||||
| Current assets |
6 125,9
EUR
|
— | — | — | — | — |
5 802,4
EUR
|
— |
| Current liabilities |
4 918,4
EUR
|
— | — | — | — | — |
4 533,2
EUR
|
— |
| Assets less current liabilities [abstract] |