Statement Of Changes In Equity [Abstract]

SalMar ASA - Filing #5829333

Concept	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through disposal of subsidiary, equity	— NOK	— NOK	33,000,000 NOK	— NOK	— NOK	— NOK	33,000,000 NOK	66,000,000 NOK	32,000,000 NOK	— NOK	— NOK	— NOK	— NOK	1,737,000,000 NOK	— NOK	— NOK	1,737,000,000 NOK	— NOK	— NOK	— NOK	— NOK	— NOK	— NOK	— NOK
Decrease (increase) through tax on share-based payment transactions, equity	—	—	—	—	—	—	—	—	—	—	—	—	— NOK	3,000,000 NOK	3,000,000 NOK	— NOK	— NOK	3,000,000 NOK	— NOK	— NOK	— NOK	— NOK	1,000,000 NOK	— NOK
Increase (decrease) through transactions with owners, equity	— NOK	— NOK	4,688,000,000 NOK	— NOK	306,000,000 NOK	— NOK	4,455,000,000 NOK	983,000,000 NOK	5,671,000,000 NOK	— NOK	— NOK	73,000,000 NOK	3,000,000 NOK	4,945,000,000 NOK	3,003,000,000 NOK	— NOK	1,942,000,000 NOK	3,049,000,000 NOK	2,000,000 NOK	— NOK	3,000,000 NOK	— NOK	49,000,000 NOK	— NOK
Sale or issue of treasury shares	—	—	—	—	—	—	—	—	—	—	—	—	— NOK	12,000,000 NOK	12,000,000 NOK	— NOK	— NOK	16,000,000 NOK	5,000,000 NOK	— NOK	— NOK	— NOK	— NOK	— NOK
Cancellation of treasury shares	—	—	—	—	—	—	—	—	—	—	—	—	3,000,000 NOK	— NOK	— NOK	— NOK	— NOK	— NOK	— NOK	— NOK	3,000,000 NOK	— NOK	— NOK	— NOK