Statement Of Changes In Equity [Abstract]

Selvaag Bolig ASA - Filing #2615895

Concept	2021-01-01 to 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 2021-12-31	2021-01-01 to 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	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	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	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	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	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	168 266 NOK	3 528 NOK	700 629 NOK	—	—	2 468 841 NOK	—	—	2 461 055 NOK	7 788 NOK	—	6 874 NOK	186 898 NOK	1 394 857 NOK	—	—	—	—	133 915 NOK	7 792 NOK	700 629 NOK	2 430 025 NOK	186 996 NOK	—	10 097 NOK	3 528 NOK	1 394 857 NOK	—	—	2 437 815 NOK	—	—	—	—	—	3 374 220 NOK	7 866 NOK	3 528 NOK	5 786 NOK	700 629 NOK	3 382 084 NOK	1 394 857 NOK	1 082 575 NOK	186 842 NOK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	4,000 NOK	—	—	—	- NOK	504 909 NOK	—	- NOK	- NOK	—	—	- NOK	—	—	—	- NOK	504 905 NOK	504 909 NOK	1 523 572 NOK	—	—	—	—	—	1 523 646 NOK	—	—	—	- NOK	- NOK	—	- NOK	- NOK	74,000 NOK	- NOK	1 523 646 NOK	—	—	—	—	—	—	—	—	—
Other comprehensive income	- NOK	—	—	—	- NOK	3 223 NOK	—	- NOK	3 223 NOK	—	—	- NOK	—	—	—	- NOK	3 223 NOK	- NOK	4 311 NOK	—	—	—	—	—	- NOK	—	—	—	- NOK	- NOK	—	- NOK	4 311 NOK	- NOK	- NOK	4 311 NOK	—	—	—	—	—	—	—	—	—
Comprehensive income	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	501 682 NOK	—	1 527 883 NOK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	- NOK	—	—	—	- NOK	467 493 NOK	—	- NOK	- NOK	—	—	- NOK	—	—	—	- NOK	467 493 NOK	467 493 NOK	2 475 244 NOK	—	—	—	—	—	2 475 244 NOK	—	—	—	- NOK	- NOK	—	- NOK	- NOK	- NOK	- NOK	2 475 244 NOK	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	- NOK	—	—	—	- NOK	23 107 NOK	—	- NOK	- NOK	—	—	910,000 NOK	—	—	—	- NOK	23 107 NOK	22 197 NOK	19 151 NOK	—	—	—	—	—	18 397 NOK	—	—	—	- NOK	- NOK	—	754,000 NOK	- NOK	- NOK	- NOK	19 151 NOK	—	—	—	—	—	—	—	—	—