Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Property, plant and equipment [abstract] | ||||||
| Property, plant and equipment |
710,207,621
EUR
|
379,425,104
EUR
|
388,231,331
EUR
|
709,932,163
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets and goodwill |
194,646,631
EUR
|
161,533,797
EUR
|
163,983,284
EUR
|
197,730,548
EUR
|
— | — |
| Investment property [abstract] | ||||||
| Investment property |
17,522,012
EUR
|
13,551,882
EUR
|
16,364,192
EUR
|
16,831,304
EUR
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements |
-
EUR
|
351,013,627
EUR
|
341,346,801
EUR
|
-
EUR
|
— | — |
| Investments in joint ventures reported in separate financial statements |
562,016
EUR
|
233,000
EUR
|
233,000
EUR
|
610,273
EUR
|
— | — |
| Investments in associates reported in separate financial statements |
55,953,391
EUR
|
29,185,477
EUR
|
29,939,454
EUR
|
54,655,607
EUR
|
— | — |
| Trade and other non-current receivables [abstract] | ||||||
| Trade and other non-current receivables |
10,565,315
EUR
|
10,542,414
EUR
|
8,368,720
EUR
|
8,389,853
EUR
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Trade and other current receivables |
366,441,439
EUR
|
237,718,876
EUR
|
320,561,369
EUR
|
474,132,118
EUR
|
— | — |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||||
| Current accrued income including current contract assets [abstract] | ||||||
| Current contract assets |
1,949,652
EUR
|
3,276,761
EUR
|
2,095,457
EUR
|
1,819,842
EUR
|
— | — |
| Categories of non-current financial assets [abstract] | ||||||
| Non-current loans and receivables |
2,680,471
EUR
|
58,124,422
EUR
|
31,876,297
EUR
|
5,017,649
EUR
|
— | — |
| Non-current financial assets at fair value through other comprehensive income [abstract] | ||||||
| Non-current financial assets at fair value through other comprehensive income |
4,528,987
EUR
|
2,117,914
EUR
|
2,117,914
EUR
|
4,528,987
EUR
|
— | — |
| Categories of current financial assets [abstract] | ||||||
| Current financial assets at fair value through profit or loss [abstract] | ||||||
| Current financial assets at fair value through profit or loss |
11,316,982
EUR
|
11,262,235
EUR
|
394,078
EUR
|
529,911
EUR
|
— | — |
| Current loans and receivables |
2,854,527
EUR
|
22,247,726
EUR
|
6,848,043
EUR
|
7,701,628
EUR
|
— | — |
| Classes of current inventories [abstract] | ||||||
| Current inventories |
169,933,758
EUR
|
87,530,630
EUR
|
128,429,794
EUR
|
175,690,478
EUR
|
— | — |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
88,674,952
EUR
|
44,670,525
EUR
|
17,680,102
EUR
|
41,730,269
EUR
|
58,740,743
EUR
|
28,986,973
EUR
|
| Miscellaneous current assets [abstract] | ||||||
| Current prepayments and other current assets |
78,506,510
EUR
|
27,371,876
EUR
|
23,597,572
EUR
|
78,607,712
EUR
|
— | — |
| Classes of other provisions [abstract] | ||||||
| Other provisions [abstract] | ||||||
| Other non-current provisions |
31,347,421
EUR
|
14,763,837
EUR
|
9,301,799
EUR
|
25,708,967
EUR
|
— | — |
| Trade and other non-current payables [abstract] | ||||||
| Trade and other non-current payables |
727,182
EUR
|
727,182
EUR
|
792,582
EUR
|
942,817
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 |
14,927,846
EUR
|
8,830,761
EUR
|
13,522,977
EUR
|
15,921,631
EUR
|
— | — |
| Trade and other current payables |
437,216,148
EUR
|
348,832,832
EUR
|
439,518,379
EUR
|
552,151,273
EUR
|
— | — |
| Categories of non-current financial liabilities [abstract] | ||||||
| Non-current financial liabilities |
303,431,060
EUR
|
282,866,603
EUR
|
282,126,997
EUR
|
287,757,788
EUR
|
— | — |
| Categories of current financial liabilities [abstract] | ||||||
| Current financial liabilities |
48,766,555
EUR
|
160,688,732
EUR
|
104,221,462
EUR
|
38,983,796
EUR
|
— | — |
| Miscellaneous current liabilities [abstract] | ||||||
| Other current liabilities |
15,722,270
EUR
|
12,479,455
EUR
|
10,974,048
EUR
|
16,260,569
EUR
|
— | — |
| Issued capital [abstract] | ||||||
| Issued capital |
52,240,977
EUR
|
52,240,977
EUR
|
52,240,977
EUR
|
52,240,977
EUR
|
— | — |
| Retained earnings [abstract] | ||||||
| Retained earnings |
290,793,508
EUR
|
14,446,758
EUR
|
30,124,614
EUR
|
271,904,940
EUR
|
— | — |
| Accumulated other comprehensive income [abstract] | ||||||
| Reserve of exchange differences on translation |
9,126,807
EUR
|
-
EUR
|
-
EUR
|
5,994,856
EUR
|
— | — |
| Reserve of cash flow hedges |
4,195,723
EUR
|
3,796,881
EUR
|
3,897,907
EUR
|
4,089,455
EUR
|
— | — |
| Miscellaneous equity [abstract] | ||||||
| Statutory reserve |
61,987,955
EUR
|
61,749,884
EUR
|
61,749,884
EUR
|
61,987,955
EUR
|
— | — |
| Capital reserve |
80,991,385
EUR
|
80,991,385
EUR
|
80,991,385
EUR
|
80,991,385
EUR
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
1,792,078,451
EUR
|
1,483,752,509
EUR
|
1,525,657,491
EUR
|
1,859,593,929
EUR
|
— | — |
| Liabilities |
965,409,014
EUR
|
897,771,141
EUR
|
923,754,477
EUR
|
1,048,341,672
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
723,104,369
EUR
|
440,396,219
EUR
|
501,981,693
EUR
|
781,124,587
EUR
|
— | — |
| Current liabilities |
528,669,087
EUR
|
535,091,103
EUR
|
571,736,937
EUR
|
634,279,497
EUR
|
— | — |
| Assets less current liabilities [abstract] |