Analysis Of Income And Expense [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	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
Analysis of income and expense [abstract]
Material income and expense [abstract]
Other finance income	—	—	—	19 038 EUR	—	—	—	—	—	—	—	—	—	—	—	13 718 EUR
Other finance cost	—	—	—	12 371 EUR	—	—	—	—	—	—	—	—	—	—	—	12 460 EUR
Expenses by nature [abstract]
Classes of employee benefits expense [abstract]
Expense from share-based payment transactions with employees	—	—	—	29 669 EUR	—	—	—	—	—	—	—	—	—	—	—	21 929 EUR
Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract]
Depreciation and amortisation expense [abstract]
Depreciation and amortisation expense	—	—	—	80 744 EUR	—	—	—	—	—	—	—	—	—	—	—	72 469 EUR
Tax expense other than income tax expense	—	—	—	11 400 EUR	—	—	—	—	—	—	—	—	—	—	—	13 081 EUR
Other expenses, by nature	—	—	—	251 082 EUR	—	—	—	—	—	—	—	—	—	—	—	182 802 EUR
Disclosure of attribution of expenses by nature to their function [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of attribution of expenses by nature to their function [abstract]
Disclosure of attribution of expenses by nature to their function [line items]
Miscellaneous other comprehensive income [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations	—	—	—	10 796 EUR	—	—	—	—	—	—	—	—	—	—	—	21 185 EUR
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of associates accounted for using equity method	—	—	—	127,000 EUR	—	—	—	—	—	—	—	—	—	—	—	62,000 EUR
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	8 205 EUR	457 567 EUR	438 567 EUR	438 525 EUR	48,000 EUR	10 796 EUR	42,000 EUR	6,000 EUR	49,000 EUR	21 188 EUR	207 837 EUR	53,000 EUR	4,000 EUR	5 080 EUR	223 945 EUR	223 994 EUR
Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	438 567 EUR	—	—	—	—	—	—	—	—	—	—	—	223 945 EUR
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	—	—	—	48,000 EUR	—	—	—	—	—	—	—	—	—	—	—	49,000 EUR