Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
3,600,000
EUR
|
2,300,000
EUR
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Other intangible assets |
87,400,000
EUR
|
90,600,000
EUR
|
— |
| Goodwill |
294,400,000
EUR
|
294,500,000
EUR
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in associates reported in separate financial statements |
4,200,000
EUR
|
7. 7
EUR
|
— |
| Trade and other receivables [abstract] | |||
| Trade and other receivables |
35,400,000
EUR
|
31,500,000
EUR
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
30,000,000
EUR
|
51. 9
EUR
|
48 .0
EUR
|
| Trade and other payables [abstract] | |||
| Accruals and deferred income including contract liabilities [abstract] | |||
| Deferred income including contract liabilities [abstract] | |||
| Contract liabilities [abstract] | |||
| Advances received, representing contract liabilities for performance obligations satisfied at point in time |
45 .4
EUR
|
39. 2
EUR
|
— |
| Trade and other payables |
35 .9
EUR
|
36,800,000
EUR
|
— |
| Categories of non-current financial liabilities [abstract] | |||
| Non-current financial liabilities |
149,600,000
EUR
|
216,300,000
EUR
|
— |
| Categories of current financial liabilities [abstract] | |||
| Current financial liabilities |
3,000,000
EUR
|
800,000
EUR
|
— |
| Issued capital [abstract] | |||
| Issued capital |
45,300,000
EUR
|
45,300,000
EUR
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
13 1 .7
EUR
|
9 1 .1
EUR
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
600,000
EUR
|
300,000
EUR
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
495. 2
EUR
|
518. 4
EUR
|
— |
| Liabilities |
289. 4
EUR
|
351,900,000
EUR
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
66,200,000
EUR
|
85,900,000
EUR
|
— |
| Current liabilities |
98,200,000
EUR
|
89,100,000
EUR
|
— |
| Assets less current liabilities [abstract] |