Statement Of Changes In Equity [Abstract]

STRABAG SE - Filing #5872761

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	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	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through disposal of subsidiary, equity	225,000 EUR	225,000 EUR	– EUR	– EUR	– EUR	– EUR	– EUR	– EUR	– EUR	– EUR	– EUR	3,244,000 EUR	– EUR	– EUR	3,244,000 EUR	– EUR	– EUR	– EUR
Reduction of issued capital	—	—	—	—	—	—	—	—	—	1,900,000,000 EUR	– EUR	903,380,000 EUR	– EUR	996,620,000 EUR	– EUR	– EUR	– EUR	903,380,000 EUR