Statement Of Financial Position [Abstract]

Rockwool - Filing #1420466

Concept	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	As at 2021-12-31	As at 2021-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31
Statement of financial position [abstract]
Assets [abstract]
Non-current assets [abstract]
Property, plant and equipment	—	1 829 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	1 632 EUR	—	—	—	—	—	—	—	—
Right-of-use assets	—	61,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	44,000,000 EUR	—	—	—	—	—	—	—	—
Goodwill	—	102,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	96,000,000 EUR	—	—	—	—	—	—	—	—
Deferred tax assets	—	52,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	54,000,000 EUR	—	—	—	—	—	—	—	—
Non-current assets	—	2 129 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	1 927 EUR	—	—	—	—	—	—	—	—
Current assets [abstract]
Current inventories	—	317,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	216,000,000 EUR	—	—	—	—	—	—	—	—
Current tax assets, current	—	39,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	38,000,000 EUR	—	—	—	—	—	—	—	—
Current assets	—	951,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	817,000,000 EUR	—	—	—	—	—	—	—	—
Assets	—	3 080 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	2 744 EUR	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	29,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	29,000,000 EUR	—	—	—	—	—	—	—	—
Retained earnings	—	2 398 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	2 178 EUR	—	—	—	—	—	—	—	—
Equity attributable to owners of parent	—	2 394 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	2 088 EUR	—	—	—	—	—	—	—	—
Non-controlling interests	—	- EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	4,000,000 EUR	—	—	—	—	—	—	—	—
Equity	2 398 EUR	2 394 EUR	1,000,000 EUR	102,000,000 EUR	2 394 EUR	- EUR	134,000,000 EUR	29,000,000 EUR	2 178 EUR	4,000,000 EUR	1,000,000 EUR	2 088 EUR	29,000,000 EUR	94,000,000 EUR	212,000,000 EUR	2 092 EUR	2 114 EUR	4,000,000 EUR	104,000,000 EUR	2 118 EUR	2 096 EUR	94,000,000 EUR	1,000,000 EUR	29,000,000 EUR
Liabilities [abstract]
Non-current liabilities [abstract]
Non-current provisions [abstract]
Non-current provisions	—	16,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	18,000,000 EUR	—	—	—	—	—	—	—	—
Deferred tax liabilities	—	51,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	47,000,000 EUR	—	—	—	—	—	—	—	—
Non-current liabilities	—	163,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	158,000,000 EUR	—	—	—	—	—	—	—	—
Current liabilities [abstract]
Current provisions [abstract]
Current provisions	—	8,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	8,000,000 EUR	—	—	—	—	—	—	—	—
Current tax liabilities, current	—	26,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	25,000,000 EUR	—	—	—	—	—	—	—	—
Current liabilities	—	523,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	494,000,000 EUR	—	—	—	—	—	—	—	—
Liabilities	—	686,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	652,000,000 EUR	—	—	—	—	—	—	—	—
Equity and liabilities	—	3 080 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	2 744 EUR	—	—	—	—	—	—	—	—