Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
806,646,000
EUR
|
790,345,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
100,747,000
EUR
|
102,348,000
EUR
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments in joint ventures accounted for using equity method |
2,492,000
EUR
|
0
EUR
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Other non-current assets |
1,228,000
EUR
|
1,074,000
EUR
|
— |
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
552,710,000
EUR
|
509,070,000
EUR
|
— |
| Other current receivables |
28,891,000
EUR
|
51,364,000
EUR
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Current accrued income including current contract assets [abstract] | |||
| Current contract assets |
672,000
EUR
|
429,000
EUR
|
— |
| Categories of non-current financial assets [abstract] | |||
| Non-current financial assets at fair value through other comprehensive income [abstract] | |||
| Non-current investments in equity instruments designated at fair value through other comprehensive income |
22,024,000
EUR
|
47,674,000
EUR
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
638,608,000
EUR
|
604,621,000
EUR
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
344,895,000
EUR
|
174,011,000
EUR
|
518,934,000
EUR
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | |||
| Non-current assets or disposal groups classified as held for sale |
44,000
EUR
|
41,000
EUR
|
— |
| Miscellaneous current assets [abstract] | |||
| Current investments |
249,794,000
EUR
|
306,769,000
EUR
|
— |
| Trade and other non-current payables [abstract] | |||
| Non-current accruals and non-current deferred income including non-current contract liabilities [abstract] | |||
| Non-current deferred income including non-current contract liabilities [abstract] | |||
| Non-current deferred income other than non-current contract liabilities |
5,654,000
EUR
|
5,547,000
EUR
|
— |
| Trade and other current payables [abstract] | |||
| Current trade payables |
148,285,000
EUR
|
153,762,000
EUR
|
— |
| 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 |
166,078,000
EUR
|
162,173,000
EUR
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Other current liabilities |
106,184,000
EUR
|
104,960,000
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
54,732,000
EUR
|
54,732,000
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
2,190,627,000
EUR
|
2,091,317,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
2,849,021,000
EUR
|
2,764,291,000
EUR
|
— |
| Liabilities |
611,237,000
EUR
|
582,525,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
1,826,120,000
EUR
|
1,705,024,000
EUR
|
— |
| Current liabilities |
448,575,000
EUR
|
433,307,000
EUR
|
— |
| Assets less current liabilities [abstract] |