Statement Of Changes In Equity [Abstract]

Bonava - Filing #691235

Concept	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	2022-01-01 to 2022-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through transactions with owners, equity	379,000,000 SEK	0 SEK	379,000,000 SEK	0 SEK	379,000,000 SEK	0 SEK	0 SEK	0 SEK	0 SEK	0 SEK	0 SEK	559,000,000 SEK	559,000,000 SEK	559,000,000 SEK