Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Cash flows from (used in) operations | — |
91,300,000
EUR
|
— |
113,500,000
EUR
|
— |
| Cash flows from (used in) operating activities | — |
74,700,000
EUR
|
— |
89,500,000
EUR
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
100,000
EUR
|
— |
800,000
EUR
|
— |
| Purchase of property, plant and equipment, classified as investing activities | — |
5,800,000
EUR
|
— |
5,400,000
EUR
|
— |
| Purchase of intangible assets, classified as investing activities | — |
11,700,000
EUR
|
— |
11,600,000
EUR
|
— |
| Cash flows from (used in) investing activities | — |
16,200,000
EUR
|
— |
16,000,000
EUR
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||
| Payments of lease liabilities, classified as financing activities | — |
24,400,000
EUR
|
— |
26,400,000
EUR
|
— |
| Cash flows from (used in) financing activities | — |
56,400,000
EUR
|
— |
78,100,000
EUR
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
2,100,000
EUR
|
— |
4,600,000
EUR
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents | — |
200,000
EUR
|
— |
1,600,000
EUR
|
— |
| Cash and cash equivalents |
15,000,000
EUR
|
— |
13,100,000
EUR
|
— |
19,300,000
EUR
|