Statement Of Comprehensive Income [Abstract]

AtoS SE - Filing #856904

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 comprehensive income [abstract]
Profit (loss)	- EUR	—	1 012 EUR	1 012 EUR	0 EUR	—	1 012 EUR	3,000,000 EUR	2 962 EUR	—	—	- EUR	2 962 EUR	2 959 EUR
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	—	—	—	149,000,000 EUR	—	—	—	—	—	—	—	—	—	349,000,000 EUR
Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]
Exchange differences on translation [abstract]
Other comprehensive income, before tax, exchange differences on translation of foreign operations	—	—	—	236,000,000 EUR	—	—	—	—	—	—	—	—	—	389,000,000 EUR
Cash flow hedges [abstract]
Other comprehensive income, before tax, cash flow hedges	—	—	—	3,000,000 EUR	—	—	—	—	—	—	—	—	—	8,000,000 EUR
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	—	—	38,000,000 EUR	—	—	—	—	—	—	—	—	—	106,000,000 EUR
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract]
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss	—	—	—	1,000,000 EUR	—	—	—	—	—	—	—	—	—	4,000,000 EUR
Other comprehensive income	345,000,000 EUR	—	345,000,000 EUR	345,000,000 EUR	0 EUR	—	—	- EUR	636,000,000 EUR	—	—	636,000,000 EUR	—	636,000,000 EUR
Comprehensive income	345,000,000 EUR	- EUR	668,000,000 EUR	668,000,000 EUR	0 EUR	- EUR	1 012 EUR	3,000,000 EUR	2 326 EUR	- EUR	- EUR	636,000,000 EUR	2 962 EUR	2 323 EUR
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	668,000,000 EUR	—	—	—	—	—	—	—	—	—	2 326 EUR
Comprehensive income, attributable to non-controlling interests	—	—	—	0 EUR	—	—	—	—	—	—	—	—	—	3,000,000 EUR