Statement Of Changes In Equity [Abstract]

Collector Bank - Filing #702407

Concept	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	3 147 SEK	2 330 SEK	500,000,000 SEK	5 990 SEK	—	7,000,000 SEK	21,000,000 SEK	—	—	—	2 421 SEK	2 330 SEK	21,000,000 SEK	—	6,000,000 SEK	500,000,000 SEK	—	—	5 266 SEK	—	3 467 SEK	10,000,000 SEK	500,000,000 SEK	6,000,000 SEK	1,000,000 SEK	- SEK	500,000,000 SEK	6,000,000 SEK	1,000,000 SEK	500,000,000 SEK	3,000,000 SEK	1 313 SEK	3 963 SEK	3,000,000 SEK	2 143 SEK	1 313 SEK	10,000,000 SEK	2 147 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	—	—	—	—	—	766,000,000 SEK	766,000,000 SEK	333,000,000 SEK	—	—	—	333,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	—	—	—	1,000,000 SEK	—	—	1,000,000 SEK	—	3,000,000 SEK	—	—	—	—	—	—	—	—	—	3,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	—	—	—	—	—	—	765,000,000 SEK	—	330,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Issue of equity	—	—	—	—	—	—	—	—	—	1 027 SEK	—	—	—	—	—	—	1 017 SEK	10,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—