Statement Of Changes In Equity [Abstract]

Kendrion N.V. - Filing #1858299

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through appropriation of retained earnings, equity	– EUR	– EUR	– EUR	4,300,000 EUR	– EUR	– EUR	– EUR	4,300,000 EUR	8,300,000 EUR	– EUR	– EUR	– EUR	– EUR	– EUR	8,300,000 EUR	– EUR
Sale or issue of treasury shares	– EUR	– EUR	1,400,000 EUR	200,000 EUR	– EUR	– EUR	1,600,000 EUR	– EUR	—	—	—	—	—	—	—	—