Corporate Information And Statement Of Ifrs Compliance [Abstract]

Rockwool - Filing #1420466

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	—	ROCK	—
Domicile of entity	—	Denmar	—
Legal form of entity	—	A/S	—
Address of entity's registered office	—	Hov	—
Principal place of business	—	glob	—
Description of nature of entity's operations and principal activities	—	We tr	—
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	317,000,000 EUR	—	216,000,000 EUR
Current trade receivables	307,000,000 EUR	—	247,000,000 EUR
Current trade payables	283,000,000 EUR	—	184,000,000 EUR