Statement Of Changes In Equity [Abstract]

AF Gruppen - Filing #2615340

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through acquisition of subsidiary, equity	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	- NOK	- NOK	- NOK	- NOK	393,000,000 NOK	393,000,000 NOK	- NOK	- NOK	- NOK
Increase (decrease) through exercise of options, equity	—	—	—	—	—	—	—	—	—	34,000,000 NOK	- NOK	40,000,000 NOK	- NOK	- NOK	- NOK	- NOK	7,000,000 NOK	40,000,000 NOK	—	—	—	—	—	—	—	—	—
Purchase of treasury shares	- NOK	- NOK	27,000,000 NOK	- NOK	- NOK	- NOK	- NOK	27,000,000 NOK	27,000,000 NOK	73,000,000 NOK	- NOK	73,000,000 NOK	- NOK	- NOK	- NOK	- NOK	- NOK	73,000,000 NOK	- NOK	- NOK	6,000,000 NOK	6,000,000 NOK	- NOK	6,000,000 NOK	- NOK	- NOK	- NOK
Sale or issue of treasury shares	- NOK	- NOK	51,000,000 NOK	- NOK	- NOK	- NOK	- NOK	51,000,000 NOK	51,000,000 NOK	62,000,000 NOK	- NOK	62,000,000 NOK	- NOK	- NOK	- NOK	- NOK	- NOK	62,000,000 NOK	- NOK	- NOK	35,000,000 NOK	35,000,000 NOK	- NOK	35,000,000 NOK	- NOK	- NOK	- NOK