Analysis Of Income And Expense [Abstract]

Gjensidige Forsikring ASA - Filing #2550727

Concept	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	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	2022-01-01 to 2022-12-31
Analysis of income and expense [abstract]
Material income and expense [abstract]
Investment income	—	2 705,0 NOK	—	—	—	—	—	—	—	2 286,3 NOK	—	—
Interest expense	—	4,050,000,000 NOK	—	—	—	—	—	—	—	3,602,000,000 NOK	—	—
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of associates accounted for using equity method	—	766,000,000 NOK	—	—	—	—	—	—	—	43,000,000 NOK	—	—
Income tax relating to components of other comprehensive income [abstract]
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	339,000,000 NOK	—	—	—	—	—	—	—	711,000,000 NOK	—	—
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss	—	601,000,000 NOK	—	—	—	—	—	—	—	390,000,000 NOK	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	—	4 459,0 NOK	—	—	—	—	—	—	—	3 419,9 NOK	—	—
Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	12,000,000 NOK	4 460,4 NOK	1,017,000,000 NOK	761,000,000 NOK	4,291,000,000 NOK	4 055,8 NOK	3 389,5 NOK	483,000,000 NOK	2,133,000,000 NOK	3 419,9 NOK	1,946,000,000 NOK	7,000,000 NOK
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	—	14,000,000 NOK	—	—	—	—	—	—	—	—	—	—