Profit Or Loss [Abstract]

Rockwool - Filing #1420466

Concept	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	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Profit or loss [abstract]
Profit (loss) [abstract]
Revenue	—	—	—	—	—	—	3 088 EUR	—	—	—	2 602 EUR	—	—	—	—	—
Other income	—	—	—	—	—	—	6,000,000 EUR	—	—	—	6,000,000 EUR	—	—	—	—	—
Profit (loss) from operating activities	—	—	—	—	—	—	401,000,000 EUR	—	—	—	338,000,000 EUR	—	—	—	—	—
Finance income	—	—	—	—	—	—	10,000,000 EUR	—	—	—	8,000,000 EUR	—	—	—	—	—
Finance costs	—	—	—	—	—	—	19,000,000 EUR	—	—	—	22,000,000 EUR	—	—	—	—	—
Profit (loss) before tax	—	—	—	—	—	—	393,000,000 EUR	—	—	—	325,000,000 EUR	—	—	—	—	—
Tax expense (income)	—	—	—	—	—	—	90,000,000 EUR	—	—	—	74,000,000 EUR	—	—	—	—	—
Profit (loss)	- EUR	- EUR	- EUR	- EUR	303,000,000 EUR	102,000,000 EUR	303,000,000 EUR	201,000,000 EUR	157,000,000 EUR	- EUR	251,000,000 EUR	- EUR	- EUR	94,000,000 EUR	- EUR	251,000,000 EUR
Profit (loss), attributable to [abstract]
Profit (loss), attributable to owners of parent	—	—	—	—	—	—	303,000,000 EUR	—	—	—	251,000,000 EUR	—	—	—	—	—
Profit (loss), attributable to non-controlling interests	—	—	—	—	—	—	- EUR	—	—	—	- EUR	—	—	—	—	—
Earnings per share [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share	—	—	—	—	—	—	14.05	—	—	—	11.54	—	—	—	—	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share	—	—	—	—	—	—	14.02	—	—	—	11.51	—	—	—	—	—