Statement Of Changes In Equity [Abstract]

Collector Bank - Filing #678811

Concept	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 2023-12-31	As at 2023-12-31	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	As at 2022-12-31	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	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	—	8 303 SEK	—	500,000,000 SEK	—	7 654 SEK	—	—	149,000,000 SEK	5,000,000 SEK	7 803 SEK	5,000,000 SEK	7 070 SEK	—	—	—	500,000,000 SEK	6 418 SEK	149,000,000 SEK	2,000,000 SEK	6 570 SEK	5,000,000 SEK	—	—	5 266 SEK	5,000,000 SEK	500,000,000 SEK	5 916 SEK	5 416 SEK	4,000,000 SEK	149,000,000 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	1 294 SEK	—	1 236 SEK	—	58,000,000 SEK	—	1 236 SEK	—	—	—	—	—	—	1 141 SEK	1 097 SEK	44,000,000 SEK	—	—	—	—	—	—	1 097 SEK	—	—	—	—	—	—	—	—
Other comprehensive income	3,000,000 SEK	—	3,000,000 SEK	—	—	—	—	3,000,000 SEK	—	—	—	—	—	2,000,000 SEK	—	—	—	—	—	—	—	—	2,000,000 SEK	2,000,000 SEK	—	—	—	—	—	—	—
Comprehensive income	1 291 SEK	—	1 233 SEK	—	58,000,000 SEK	—	1 236 SEK	3,000,000 SEK	—	—	—	—	—	1 143 SEK	1 097 SEK	44,000,000 SEK	—	—	—	—	—	—	1 099 SEK	2,000,000 SEK	—	—	—	—	—	—	—
Increase (decrease) in equity	58,000,000 SEK	—	—	—	58,000,000 SEK	—	—	—	—	—	—	—	—	11,000,000 SEK	55,000,000 SEK	44,000,000 SEK	—	—	—	—	—	—	55,000,000 SEK	—	—	—	—	—	—	—	—