Statement Of Comprehensive Income [Abstract]

Rockwool - Filing #5889760

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	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 comprehensive income [abstract]
Profit (loss)	- EUR	- EUR	550,000,000 EUR	- EUR	182,000,000 EUR	- EUR	368,000,000 EUR	550,000,000 EUR	- EUR	- EUR	389,000,000 EUR	- EUR	- EUR	264,000,000 EUR	125,000,000 EUR	389,000,000 EUR
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	- EUR	- EUR	8,000,000 EUR	- EUR	- EUR	- EUR	8,000,000 EUR	8,000,000 EUR	- EUR	- EUR	10,000,000 EUR	- EUR	- EUR	10,000,000 EUR	- EUR	10,000,000 EUR
Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]
Exchange differences on translation [abstract]
Other comprehensive income, before tax, exchange differences on translation of foreign operations	- EUR	- EUR	9,000,000 EUR	- EUR	- EUR	9,000,000 EUR	- EUR	9,000,000 EUR	- EUR	54,000,000 EUR	54,000,000 EUR	- EUR	- EUR	- EUR	- EUR	54,000,000 EUR
Cash flow hedges [abstract]
Other comprehensive income, before tax, cash flow hedges	- EUR	- EUR	1,000,000 EUR	1,000,000 EUR	- EUR	- EUR	- EUR	1,000,000 EUR	- EUR	- EUR	3,000,000 EUR	- EUR	3,000,000 EUR	- EUR	- EUR	3,000,000 EUR
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	—	3,000,000 EUR	—	—	—	—	—	—	—	3,000,000 EUR	—	—	—	—	—
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract]
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss	—	—	- EUR	—	—	—	—	—	—	—	1,000,000 EUR	—	—	—	—	—
Other comprehensive income	—	—	5,000,000 EUR	—	—	—	—	—	—	—	63,000,000 EUR	—	—	—	—	—
Comprehensive income	- EUR	- EUR	555,000,000 EUR	1,000,000 EUR	182,000,000 EUR	9,000,000 EUR	363,000,000 EUR	555,000,000 EUR	- EUR	54,000,000 EUR	326,000,000 EUR	- EUR	2,000,000 EUR	257,000,000 EUR	125,000,000 EUR	326,000,000 EUR
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	555,000,000 EUR	—	—	—	—	—	—	—	326,000,000 EUR	—	—	—	—	—
Comprehensive income, attributable to non-controlling interests	—	—	- EUR	—	—	—	—	—	—	—	- EUR	—	—	—	—	—