Statement Of Financial Position [Abstract]

Rockwool - Filing #1352455

Concept	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 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 financial position [abstract]
Assets [abstract]
Property, plant and equipment	—	—	—	2 079 EUR	—	—	1 987 EUR	—	—	—	—	—	—	—	—	—	—	—
Right-of-use assets	—	—	—	72,000,000 EUR	—	—	88,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—
Goodwill	—	—	—	98,000,000 EUR	—	—	107,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—
Deferred tax assets	—	—	—	46,000,000 EUR	—	—	48,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	—	353,000,000 EUR	—	—	202,000,000 EUR	—	—	—	—	—	165,000,000 EUR	—	—	—	—	—
Assets	—	—	—	3 554 EUR	—	—	3 428 EUR	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	—	—	29,000,000 EUR	—	—	29,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—
Retained earnings	—	—	—	2 824 EUR	—	—	2 567 EUR	—	—	—	—	—	—	—	—	—	—	—
Equity	29,000,000 EUR	171,000,000 EUR	2 824 EUR	2 804 EUR	125,000,000 EUR	3,000,000 EUR	2 580 EUR	2 567 EUR	29,000,000 EUR	117,000,000 EUR	1,000,000 EUR	102,000,000 EUR	2 394 EUR	2 398 EUR	1,000,000 EUR	102,000,000 EUR	134,000,000 EUR	29,000,000 EUR
Liabilities [abstract]
Deferred tax liabilities	—	—	—	66,000,000 EUR	—	—	55,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—
Liabilities	—	—	—	750,000,000 EUR	—	—	848,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities	—	—	—	3 554 EUR	—	—	3 428 EUR	—	—	—	—	—	—	—	—	—	—	—