Statement Of Changes In Equity [Abstract]

Nyxoah SA - Filing #3186816

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	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 conversion of convertible instruments, equity	—	—	—	—	—	—	—	− EUR	989,000 EUR	− EUR	1 000 EUR	− EUR	11,000 EUR	− EUR
Increase (decrease) through transactions with owners, equity	− EUR	77 097 EUR	477,000 EUR	− EUR	631,000 EUR	78 998 EUR	793,000 EUR	319,000 EUR	103 268 EUR	1 359 EUR	107 132 EUR	− EUR	2 674 EUR	2 230 EUR
Share issue related cost	− EUR	7 587 EUR	− EUR	− EUR	− EUR	7 587 EUR	− EUR	− EUR	6 578 EUR	− EUR	6 578 EUR	− EUR	− EUR	− EUR