Statement Of Changes In Equity [Abstract]

Rockwool - Filing #1352455

Concept	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	2 804 EUR	125,000,000 EUR	—	2 824 EUR	—	—	—	29,000,000 EUR	171,000,000 EUR	3,000,000 EUR	—	2 580 EUR	—	—	—	102,000,000 EUR	—	2 567 EUR	29,000,000 EUR	117,000,000 EUR	—	1,000,000 EUR	—	2 398 EUR	2 394 EUR	1,000,000 EUR	102,000,000 EUR	134,000,000 EUR	29,000,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	389,000,000 EUR	—	—	125,000,000 EUR	—	264,000,000 EUR	- EUR	- EUR	—	—	—	- EUR	—	- EUR	273,000,000 EUR	171,000,000 EUR	—	- EUR	—	—	—	102,000,000 EUR	—	- EUR	—	—	—	—	—	—
Other comprehensive income	63,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	13,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	326,000,000 EUR	—	—	125,000,000 EUR	—	257,000,000 EUR	54,000,000 EUR	- EUR	—	—	—	2,000,000 EUR	—	- EUR	286,000,000 EUR	167,000,000 EUR	—	- EUR	—	—	—	102,000,000 EUR	—	17,000,000 EUR	—	—	—	—	—	—
Dividends recognised as distributions to owners	101,000,000 EUR	—	—	102,000,000 EUR	—	1,000,000 EUR	- EUR	- EUR	—	—	—	- EUR	—	- EUR	101,000,000 EUR	1,000,000 EUR	—	- EUR	—	—	—	102,000,000 EUR	—	- EUR	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	2,000,000 EUR	—	—	- EUR	—	2,000,000 EUR	- EUR	- EUR	—	—	—	- EUR	—	- EUR	2,000,000 EUR	2,000,000 EUR	—	- EUR	—	—	—	- EUR	—	- EUR	—	—	—	—	—	—