Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-01-01 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||||||||||||||
| Property, plant and equipment [abstract] | ||||||||||||||||||
| Property, plant and equipment | — | — | — |
32 496
EUR
|
— | — | — | — |
33 512
EUR
|
— | — | — | — | — | — | — | — | — |
| Intangible assets and goodwill [abstract] | ||||||||||||||||||
| Intangible assets other than goodwill [abstract] | ||||||||||||||||||
| Intangible assets other than goodwill | — | — | — |
118 127
EUR
|
— | — | — | — |
110 083
EUR
|
— | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — |
1 351 957
EUR
|
— | — | — | — |
1 370 637
EUR
|
— | — | — | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||||||||||||||
| Investments in associates reported in separate financial statements | — | — | — |
6 393
EUR
|
— | — | — | — |
6 048
EUR
|
— | — | — | — | — | — | — | — | — |
| Trade and other current receivables [abstract] | ||||||||||||||||||
| Trade and other current receivables | — | — | — |
561 958
EUR
|
— | — | — | — |
547 167
EUR
|
— | — | — | — | — | — | — | — | — |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||||||||||||||||
| Current accrued income including current contract assets [abstract] | ||||||||||||||||||
| Current contract assets | — | — | — |
129 733
EUR
|
— | — | — | — |
115 872
EUR
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents [abstract] | ||||||||||||||||||
| Cash and cash equivalents | — | — | — |
277 911
EUR
|
— | — | — | — |
385 670
EUR
|
— | — | — | — | — | — | — | — |
298 454
EUR
|
| Miscellaneous current assets [abstract] | ||||||||||||||||||
| Current derivative financial assets | — | — | — |
-
EUR
|
— | — | — | — |
-
EUR
|
— | — | — | — | — | — | — | — | — |
| Other current assets | — | — | — |
67 115
EUR
|
— | — | — | — |
66 522
EUR
|
— | — | — | — | — | — | — | — | — |
| Classes of other provisions [abstract] | ||||||||||||||||||
| Other provisions [abstract] | ||||||||||||||||||
| Other current provisions | — | — | — |
4 789
EUR
|
— | — | — | — |
9 617
EUR
|
— | — | — | — | — | — | — | — | — |
| Trade and other non-current payables [abstract] | ||||||||||||||||||
| Other non-current payables | — | — | — |
47 939
EUR
|
— | — | — | — |
38 011
EUR
|
— | — | — | — | — | — | — | — | — |
| Trade and other current payables [abstract] | ||||||||||||||||||
| Current accruals and current deferred income including current contract liabilities [abstract] | ||||||||||||||||||
| Current deferred income including current contract liabilities [abstract] | ||||||||||||||||||
| Current contract liabilities [abstract] | ||||||||||||||||||
| Current contract liabilities | — | — | — |
53 916
EUR
|
— | — | — | — |
51 716
EUR
|
— | — | — | — | — | — | — | — | — |
| Trade and other current payables | — | — | — |
337 905
EUR
|
— | — | — | — |
349 970
EUR
|
— | — | — | — | — | — | — | — | — |
| Miscellaneous current liabilities [abstract] | ||||||||||||||||||
| Other current liabilities | — | — | — |
207 849
EUR
|
— | — | — | — |
177 533
EUR
|
— | — | — | — | — | — | — | — | — |
| Issued capital [abstract] | ||||||||||||||||||
| Issued capital | — | — | — |
10 801
EUR
|
— | — | — | — |
11 063
EUR
|
— | — | — | — | — | — | — | — | — |
| Accumulated other comprehensive income [abstract] | ||||||||||||||||||
| Reserve of exchange differences on translation | — | — | — |
164 363
EUR
|
— | — | — | — |
107 392
EUR
|
— | — | — | — | — | — | — | — | — |
| Accumulated other comprehensive income |
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
— |
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
-
EUR
|
— |
| Net assets (liabilities) [abstract] | ||||||||||||||||||
| Assets | — | — | — |
2 752 756
EUR
|
— | — | — | — |
2 851 122
EUR
|
— | — | — | — | — | — | — | — | — |
| Net current assets (liabilities) [abstract] | ||||||||||||||||||
| Current assets | — | — | — |
1 046 388
EUR
|
— | — | — | — |
1 127 967
EUR
|
— | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — |
705 233
EUR
|
— | — | — | — |
728 806
EUR
|
— | — | — | — | — | — | — | — | — |
| Assets less current liabilities [abstract] |