Profit Or Loss [Abstract]

AtoS SE - Filing #5982713

Concept	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31
Profit or loss [abstract]
Profit (loss) [abstract]
Profit (loss) from operating activities	—	—	2 659 EUR	—	—	—	—	—	—	3 106 EUR	—	—	—	—
Share of profit (loss) of associates and joint ventures accounted for using equity method	—	—	- EUR	—	—	—	—	—	—	5,000,000 EUR	—	—	—	—
Profit (loss) before tax	—	—	462,000,000 EUR	—	—	—	—	—	—	3 332 EUR	—	—	—	—
Tax expense (income)	—	—	214,000,000 EUR	—	—	—	—	—	—	112,000,000 EUR	—	—	—	—
Profit (loss)	0 EUR	- EUR	248,000,000 EUR	248,000,000 EUR	- EUR	- EUR	248,000,000 EUR	- EUR	- EUR	3 439 EUR	3 441 EUR	- EUR	1,000,000 EUR	3 441 EUR
Profit (loss), attributable to [abstract]
Profit (loss), attributable to owners of parent	—	—	248,000,000 EUR	—	—	—	—	—	—	3 441 EUR	—	—	—	—
Profit (loss), attributable to non-controlling interests	—	—	0 EUR	—	—	—	—	—	—	1,000,000 EUR	—	—	—	—
Earnings per share [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share	—	—	34.000	—	—	—	—	—	—	3,104.000	—	—	—	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share	—	—	31.000	—	—	—	—	—	—	3,104.000	—	—	—	—