Statement Of Changes In Equity [Abstract]

Elkem - Filing #5626181

Concept	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2024-12-31	As at 2024-12-31	2023-01-01 to 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	As at 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	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	As at 2023-12-31	2023-01-01 to 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 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	22 410 NOK	—	3 197 NOK	109,000,000 NOK	3 275 NOK	—	—	25 911 NOK	—	—	46,000,000 NOK	—	—	305,000,000 NOK	—	19 181 NOK	3 502 NOK	26 020 NOK	—	24 458 NOK	—	20 827 NOK	—	—	133,000,000 NOK	—	—	3 197 NOK	2 231 NOK	24 325 NOK	79,000,000 NOK	301,000,000 NOK	—	18 675 NOK	—	—	3 498 NOK	—	28 773 NOK	134,000,000 NOK	22 412 NOK	3 197 NOK	1 914 NOK	28 639 NOK	3 030 NOK	6 228 NOK	19 699 NOK	798,000,000 NOK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	488,000,000 NOK	- NOK	—	- NOK	—	—	—	488,000,000 NOK	89,000,000 NOK	—	577,000,000 NOK	- NOK	—	- NOK	- NOK	—	488,000,000 NOK	—	—	—	170,000,000 NOK	—	72,000,000 NOK	—	98,000,000 NOK	72,000,000 NOK	—	- NOK	- NOK	—	—	—	—	—	- NOK	—	72,000,000 NOK	- NOK	—	- NOK	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	1 090 NOK	- NOK	—	1 044 NOK	—	—	—	1 090 NOK	10,000,000 NOK	—	1 100 NOK	33,000,000 NOK	—	- NOK	- NOK	—	13,000,000 NOK	—	—	—	566,000,000 NOK	—	570,000,000 NOK	—	4,000,000 NOK	570,000,000 NOK	—	317,000,000 NOK	- NOK	—	—	—	—	—	- NOK	—	10,000,000 NOK	- NOK	—	878,000,000 NOK	—	—	—	—	—	—	—	—	—	—
Comprehensive income	1 579 NOK	- NOK	—	1 044 NOK	—	—	—	1 579 NOK	98,000,000 NOK	—	1 677 NOK	33,000,000 NOK	—	- NOK	- NOK	—	501,000,000 NOK	—	—	—	396,000,000 NOK	—	498,000,000 NOK	—	102,000,000 NOK	498,000,000 NOK	—	317,000,000 NOK	- NOK	—	—	—	—	—	- NOK	—	62,000,000 NOK	- NOK	—	878,000,000 NOK	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	- NOK	- NOK	—	- NOK	—	—	—	- NOK	123,000,000 NOK	—	123,000,000 NOK	- NOK	—	- NOK	- NOK	—	- NOK	—	—	—	3 919 NOK	—	3 815 NOK	—	104,000,000 NOK	1 081 NOK	—	- NOK	- NOK	—	—	—	—	—	2 734 NOK	—	1 081 NOK	2 734 NOK	—	- NOK	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	5,000,000 NOK	- NOK	—	- NOK	—	—	—	4,000,000 NOK	- NOK	—	5,000,000 NOK	- NOK	—	1,000,000 NOK	1,000,000 NOK	—	4,000,000 NOK	—	—	—	8,000,000 NOK	—	8,000,000 NOK	—	- NOK	5,000,000 NOK	—	- NOK	- NOK	—	—	—	—	—	3,000,000 NOK	—	5,000,000 NOK	3,000,000 NOK	—	- NOK	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	2,000,000 NOK	- NOK	—	- NOK	—	—	—	- NOK	- NOK	—	2,000,000 NOK	- NOK	—	2,000,000 NOK	2,000,000 NOK	—	- NOK	—	—	—	8,000,000 NOK	—	8,000,000 NOK	—	- NOK	- NOK	—	- NOK	- NOK	—	—	—	—	—	8,000,000 NOK	—	- NOK	8,000,000 NOK	—	- NOK	—	—	—	—	—	—	—	—	—	—