Statement Of Cash Flows [Abstract]
| Concept |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||
| Interest paid, classified as operating activities | — |
33,410
EUR
|
— | — | — |
36,477
EUR
|
— | — | — |
| Interest received, classified as operating activities | — |
870,000
EUR
|
— | — | — |
1,465
EUR
|
— | — | — |
| Income taxes paid (refund), classified as operating activities | — |
59,408
EUR
|
— | — | — |
65,432
EUR
|
— | — | — |
| Cash flows from (used in) operating activities | — |
504,669
EUR
|
— | — | — |
429,782
EUR
|
— | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
31,990
EUR
|
— | — | — |
473,000
EUR
|
— | — | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
8,478
EUR
|
— | — | — |
47,876
EUR
|
— | — | — |
| Dividends received, classified as investing activities | — |
2,533
EUR
|
— | — | — |
0
EUR
|
— | — | — |
| Cash flows from (used in) investing activities | — |
147,841
EUR
|
— | — | — |
264,091
EUR
|
— | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||
| Payments to acquire or redeem entity's shares | — |
19,686
EUR
|
19,686
EUR
|
19,686
EUR
|
29,478
EUR
|
29,478
EUR
|
— |
29,478
EUR
|
— |
| Payments of lease liabilities, classified as financing activities | — |
45,179
EUR
|
— | — | — |
42,918
EUR
|
— | — | — |
| Cash flows from (used in) financing activities | — |
183,248
EUR
|
— | — | — |
201,245
EUR
|
— | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
540,076
EUR
|
— | — | — |
35,554
EUR
|
— | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
2,683
EUR
|
— | — | — |
1,229
EUR
|
— | — | — |
| Cash and cash equivalents |
666,148
EUR
|
— | — | — | — | — |
128,755
EUR
|
— |
163,080
EUR
|