Statement Of Changes In Equity [Abstract]

Besqab - Filing #690849

Concept	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	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 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	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	1 139,8 SEK	—	—	—	52,000,000 SEK	3,953,000,000 SEK	5,947,000,000 SEK	1,551,000,000 SEK	1 145,0 SEK	—	—	—	9,607,000,000 SEK	—	1 520,5 SEK	—	1 511,8 SEK	87,000,000 SEK	3,960,000,000 SEK	1,551,000,000 SEK	—	—	9,208,000,000 SEK	47,000,000 SEK	1 469,7 SEK	1,551,000,000 SEK	3,938,000,000 SEK	1 474,4 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	3,171,000,000 SEK	3,044,000,000 SEK	127,000,000 SEK	—	—	—	—	—	3,044,000,000 SEK	—	20,000,000 SEK	—	784,000,000 SEK	—	—	—	—	—	—	804,000,000 SEK	784,000,000 SEK	—	—	—	—	—	—
Other comprehensive income	—	0 SEK	—	—	—	—	—	—	—	0 SEK	—	—	—	0 SEK	—	—	—	—	—	—	0 SEK	—	—	—	—	—	—	—
Comprehensive income	—	3,171,000,000 SEK	3,044,000,000 SEK	127,000,000 SEK	—	—	—	—	—	3,044,000,000 SEK	—	20,000,000 SEK	—	784,000,000 SEK	—	—	—	—	—	—	804,000,000 SEK	784,000,000 SEK	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	7,000,000 SEK	—	—	—	—	—	—	—	7,000,000 SEK	7,000,000 SEK	—	—	22,000,000 SEK	—	22,000,000 SEK	—	—	—	—	22,000,000 SEK	—	—	—	—	—	—	—