Corporate Information And Statement Of Ifrs Compliance [Abstract]

STRABAG SE - Filing #1078023

Concept	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2020-12-31
Corporate information and statement of IFRS compliance [abstract]
Name of reporting entity or other means of identification	—	STRABAG	—
Domicile of entity	—	Villach	—
Legal form of entity	—	SE	—
Country of incorporation	—	Österreich	—
Address of entity's registered office	—	Triglavstraße 9, 9500	—
Principal place of business	—	Villach	—
Description of nature of entity's operations and principal activities	—	STRABAG deckt dabei die gesamte Leistungspalette (Hoch- und Ingenieurbau, Verkehrswegebau, Tunnelbau, baunahe Dienstleistungen) sowie die gesamte Wertschöpfungskette der Bauwirtschaft ab.	—
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [text block]	—	—	—
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [abstract]
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]
Current inventories	969,103 EUR	—	1.069.909 EUR