Statement Of Changes In Equity [Abstract]

Alten - Filing #2813158

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	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	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	—	—	0 EUR	53,000 EUR	53,000 EUR	207 837 EUR	207 837 EUR	0 EUR	—	—	0 EUR	—	0 EUR	98 011 EUR	—	98 011 EUR	224,000 EUR	224,000 EUR	—	—
Increase (decrease) through transactions with owners, equity	935,000 EUR	207,000 EUR	—	—	—	187 472 EUR	207 837 EUR	21 093 EUR	0 EUR	0 EUR	—	341,000 EUR	16 122 EUR	98 011 EUR	0 EUR	81 402 EUR	—	—	0 EUR	146,000 EUR