Statement Of Financial Position [Abstract]

AtoS SE - Filing #2816871

Concept	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 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	As at 2019-12-31	As at 2019-12-31
Statement of financial position [abstract]
Assets [abstract]
Non-current assets [abstract]
Property, plant and equipment	—	—	421,000,000 EUR	—	—	—	—	—	—	—	—	514,000,000 EUR	—	—	—	—	—	—	—	—	—
Goodwill	—	—	5 105 EUR	—	—	—	—	—	—	—	—	6 140 EUR	—	—	—	—	—	—	—	—	—
Intangible assets other than goodwill	—	—	1 089 EUR	—	—	—	—	—	—	—	—	1 391 EUR	—	—	—	—	—	—	—	—	—
Investments accounted for using equity method	—	—	4,000,000 EUR	—	—	—	—	—	—	—	—	7,000,000 EUR	—	—	—	—	—	—	—	—	—
Deferred tax assets	—	—	189,000,000 EUR	—	—	—	—	—	—	—	—	351,000,000 EUR	—	—	—	—	—	—	—	—	—
Non-current assets	—	—	8 720 EUR	—	—	—	—	—	—	—	—	10 310 EUR	—	—	—	—	—	—	—	—	—
Current assets [abstract]
Current tax assets, current	—	—	76,000,000 EUR	—	—	—	—	—	—	—	—	43,000,000 EUR	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	3 372 EUR	—	—	—	—	—	—	—	—	3 282 EUR	—	—	—	—	—	—	—	—	—
Current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners	—	—	7 476 EUR	—	—	—	—	—	—	—	—	7 816 EUR	—	—	—	—	—	—	—	—	—
Assets	—	—	16 819 EUR	—	—	—	—	—	—	—	—	18 127 EUR	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	—	111,000,000 EUR	—	—	—	—	—	—	—	—	110,000,000 EUR	—	—	—	—	—	—	—	—	—
Equity attributable to owners of parent	—	—	4 437 EUR	—	—	—	—	—	—	—	—	6 861 EUR	—	—	—	—	—	—	—	—	—
Non-controlling interests	—	—	6,000,000 EUR	—	—	—	—	—	—	—	—	10,000,000 EUR	—	—	—	—	—	—	—	—	—
Equity	5 790 EUR	1 498 EUR	4 444 EUR	4 437 EUR	6,000,000 EUR	2 962 EUR	111,000,000 EUR	10,000,000 EUR	1 476 EUR	6 861 EUR	110,000,000 EUR	6 871 EUR	550,000,000 EUR	4 724 EUR	7 075 EUR	12,000,000 EUR	1 441 EUR	7 087 EUR	2 126 EUR	3 399 EUR	109,000,000 EUR
Liabilities [abstract]
Non-current liabilities [abstract]
Non-current provisions [abstract]
Non-current provisions for employee benefits	—	—	944,000,000 EUR	—	—	—	—	—	—	—	—	1 359 EUR	—	—	—	—	—	—	—	—	—
Other non-current provisions	—	—	657,000,000 EUR	—	—	—	—	—	—	—	—	47,000,000 EUR	—	—	—	—	—	—	—	—	—
Deferred tax liabilities	—	—	67,000,000 EUR	—	—	—	—	—	—	—	—	164,000,000 EUR	—	—	—	—	—	—	—	—	—
Non-current liabilities	—	—	5 352 EUR	—	—	—	—	—	—	—	—	5 385 EUR	—	—	—	—	—	—	—	—	—
Current liabilities [abstract]
Current provisions [abstract]
Current provisions	—	—	137,000,000 EUR	—	—	—	—	—	—	—	—	118,000,000 EUR	—	—	—	—	—	—	—	—	—
Current tax liabilities, current	—	—	61,000,000 EUR	—	—	—	—	—	—	—	—	86,000,000 EUR	—	—	—	—	—	—	—	—	—
Current liabilities other than liabilities included in disposal groups classified as held for sale	—	—	6 546 EUR	—	—	—	—	—	—	—	—	5 871 EUR	—	—	—	—	—	—	—	—	—
Liabilities included in disposal groups classified as held for sale	—	—	477,000,000 EUR	—	—	—	—	—	—	—	—	- EUR	—	—	—	—	—	—	—	—	—
Equity and liabilities	—	—	16 819 EUR	—	—	—	—	—	—	—	—	18 127 EUR	—	—	—	—	—	—	—	—	—