Statement Of Changes In Equity [Abstract]

DNB Bank ASA - Filing #2547996

Concept	As at 2023-12-31	As at 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 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 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	2022-01-01 to 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	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	18 960 NOK	7 266 NOK	22 004 NOK	—	—	269 296 NOK	—	73,000,000 NOK	—	202 092 NOK	—	—	168,000,000 NOK	18 733 NOK	249 840 NOK	5 200 NOK	19 378 NOK	16 089 NOK	—	—	—	150,000,000 NOK	—	—	227,000,000 NOK	18 733 NOK	—	190 063 NOK	173 235 NOK	18 733 NOK	266,000,000 NOK	234 076 NOK	45,000,000 NOK	19 379 NOK	16 974 NOK	5 444 NOK	243 912 NOK	183 071 NOK	19 379 NOK	16 974 NOK	45,000,000 NOK	5 444 NOK	266,000,000 NOK	18 733 NOK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	—	39 479 NOK	1 312 NOK	—	—	—	—	—	2,000,000 NOK	38 166 NOK	—	—	—	—	—	—	33 438 NOK	32 587 NOK	82,000,000 NOK	—	—	769,000,000 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	—	—	1 663 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	340,000,000 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	—	—	41 142 NOK	1 312 NOK	—	2 066 NOK	—	76,000,000 NOK	—	2,000,000 NOK	37 839 NOK	—	—	—	—	—	—	33 098 NOK	32 385 NOK	82,000,000 NOK	—	243,000,000 NOK	769,000,000 NOK	—	—	105,000,000 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	—	—	—	62,000,000 NOK	—	—	—	—	—	—	62,000,000 NOK	—	—	—	—	—	—	—	120,000,000 NOK	—	120,000,000 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) in equity	—	—	—	10,000,000 NOK	—	—	—	—	—	—	—	10,000,000 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—