Statement Of Changes In Equity [Abstract]

AtoS SE - Filing #2813270

Concept	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through appropriation of retained earnings, equity	2 962 EUR	—	- EUR	- EUR	—	—	2 962 EUR	—	550,000,000 EUR	—	—	550,000,000 EUR	- EUR	- EUR
Increase (decrease) through transactions with owners, equity	2 940 EUR	- EUR	23,000,000 EUR	23,000,000 EUR	1,000,000 EUR	1,000,000 EUR	2 962 EUR	7,000,000 EUR	550,000,000 EUR	1,000,000 EUR	22,000,000 EUR	429,000,000 EUR	98,000,000 EUR	105,000,000 EUR