Statement Of Changes In Equity [Abstract]

Elkem - Filing #2585159

Concept	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	2022-01-01 to 2022-12-31	2022-01-01 to 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	As at 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	2022-01-01 to 2022-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 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 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	2021-01-01 to 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	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 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 2020-12-31	As at 2020-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	28 773 NOK	—	—	—	—	—	134,000,000 NOK	22 412 NOK	—	3 197 NOK	1 927 NOK	28 639 NOK	—	3 030 NOK	6 228 NOK	19 686 NOK	—	798,000,000 NOK	—	—	—	11 692 NOK	—	355,000,000 NOK	8 097 NOK	—	19 850 NOK	- NOK	19 874 NOK	355,000,000 NOK	- NOK	- NOK	11 668 NOK	- NOK	4 899 NOK	4 899 NOK	3 197 NOK	- NOK	8 097 NOK	1 266 NOK	—	1 266 NOK	10 071 NOK	24,000,000 NOK	24,000,000 NOK	24,000,000 NOK	- NOK	10 047 NOK	—	—	19 764 NOK	86,000,000 NOK	19 789 NOK	—	24,000,000 NOK	3 197 NOK	86,000,000 NOK	—	—	—	6 232 NOK	108,000,000 NOK	189,000,000 NOK	6 296 NOK	12 527 NOK	2 907 NOK	3 389 NOK	5 615 NOK	12 635 NOK	806,000,000 NOK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	- NOK	9 642 NOK	9 561 NOK	80,000,000 NOK	- NOK	—	—	9 561 NOK	—	—	—	- NOK	—	—	—	9 561 NOK	—	- NOK	- NOK	36,000,000 NOK	—	- NOK	—	—	4 628 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- NOK	—	—	—	—	—	—	—	4 628 NOK	- NOK	—	—	—	- NOK	—	—	—	- NOK	4 664 NOK	4 628 NOK	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	- NOK	1 234 NOK	1 228 NOK	6,000,000 NOK	444,000,000 NOK	—	—	124,000,000 NOK	—	—	—	- NOK	—	—	—	1 228 NOK	—	661,000,000 NOK	- NOK	0 NOK	—	544,000,000 NOK	—	—	1 079 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	460,000,000 NOK	—	—	—	—	—	—	—	75,000,000 NOK	- NOK	—	—	—	- NOK	—	—	—	- NOK	1 078 NOK	1 079 NOK	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	- NOK	10 876 NOK	10 790 NOK	86,000,000 NOK	444,000,000 NOK	—	—	9 685 NOK	—	—	—	- NOK	—	—	—	10 790 NOK	—	661,000,000 NOK	- NOK	36,000,000 NOK	—	544,000,000 NOK	—	—	5 706 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	460,000,000 NOK	—	—	—	—	—	—	—	4 703 NOK	- NOK	—	—	—	- NOK	—	—	—	- NOK	5 742 NOK	5 706 NOK	—	—	—	—	—	—	—	—	—	—
Issue of equity	—	- NOK	- NOK	- NOK	- NOK	- NOK	—	—	- NOK	—	—	—	- NOK	—	—	—	- NOK	—	- NOK	- NOK	- NOK	—	- NOK	—	—	1 900 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- NOK	—	—	—	—	—	—	—	- NOK	1 610 NOK	—	—	—	291,000,000 NOK	—	—	—	1 900 NOK	1 900 NOK	- NOK	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	- NOK	1 938 NOK	- NOK	38,000,000 NOK	- NOK	—	—	- NOK	—	—	—	1 900 NOK	—	—	—	1 900 NOK	—	- NOK	1 900 NOK	58,000,000 NOK	—	- NOK	—	—	96,000,000 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- NOK	—	—	—	—	—	—	—	- NOK	96,000,000 NOK	—	—	—	- NOK	—	—	—	96,000,000 NOK	154,000,000 NOK	- NOK	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	—	- NOK	38,000,000 NOK	46,000,000 NOK	- NOK	- NOK	—	—	46,000,000 NOK	—	—	—	7,000,000 NOK	—	—	—	38,000,000 NOK	—	- NOK	7,000,000 NOK	- NOK	—	- NOK	—	—	278,000,000 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- NOK	—	—	—	—	—	—	—	246,000,000 NOK	32,000,000 NOK	—	—	—	- NOK	—	—	—	32,000,000 NOK	278,000,000 NOK	246,000,000 NOK	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	- NOK	24,000,000 NOK	- NOK	- NOK	- NOK	—	—	- NOK	—	—	—	24,000,000 NOK	—	—	—	24,000,000 NOK	—	- NOK	24,000,000 NOK	- NOK	—	- NOK	—	—	28,000,000 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- NOK	—	—	—	—	—	—	—	- NOK	28,000,000 NOK	—	—	—	- NOK	—	—	—	28,000,000 NOK	28,000,000 NOK	- NOK	—	—	—	—	—	—	—	—	—	—