Statement Of Changes In Equity [Abstract]

Avantium N.V. - Filing #1859533

Concept	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	195,291,000 EUR	11,936,000 EUR	—	50,026,000 EUR	—	230,252,000 EUR	—	3,129,000 EUR	—	—	—	171,057,000 EUR	2,591,000 EUR	—	10,407,000 EUR	204,296,000 EUR	—	—	46,238,000 EUR	—	9,863,000 EUR	204,296,000 EUR	68,215,000 EUR	148,527,000 EUR	2,583,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	— EUR	—	— EUR	—	— EUR	—	24,416,000 EUR	24,416,000 EUR	22,830,000 EUR	—	—	22,830,000 EUR	—	—	— EUR	— EUR	—	— EUR	—	—	—	—	—
Other comprehensive income	—	—	— EUR	—	— EUR	—	— EUR	—	— EUR	— EUR	— EUR	—	—	— EUR	—	—	— EUR	— EUR	—	— EUR	—	—	—	—	—
Comprehensive income	—	—	— EUR	—	— EUR	—	— EUR	—	24,416,000 EUR	24,416,000 EUR	22,830,000 EUR	—	—	22,830,000 EUR	—	—	— EUR	— EUR	—	— EUR	—	—	—	—	—
Issue of equity	—	—	— EUR	—	25,855,000 EUR	—	521,000 EUR	—	26,376,000 EUR	— EUR	8,000 EUR	—	—	— EUR	—	—	— EUR	8,000 EUR	—	— EUR	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	— EUR	—	101,000 EUR	—	17,000 EUR	—	117,000 EUR	— EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—