Statement Of Comprehensive Income [Abstract]

OSB Group PLC - Filing #1592512

Concept	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	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	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	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	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Statement of comprehensive income [abstract]
Profit (loss)	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	345 .3 GBP	345,300,000 GBP	– GBP	196 .3 GBP	– GBP	– GBP	– GBP	196,300,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP
Other comprehensive income [abstract]
Other comprehensive income	—	—	—	—	—	—	—	—	—	—	500,000 GBP	—	—	500,000 GBP	—	—	—	—	—	—	—	—	—	—
Comprehensive income	– GBP	– GBP	– GBP	– GBP	100,000 GBP	– GBP	0 .4 GBP	– GBP	– GBP	– GBP	344. 8 GBP	345,300,000 GBP	– GBP	196. 8 GBP	– GBP	– GBP	– GBP	196 .3 GBP	500,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	—	—	—	—	—	—	—	3 4 0.1 GBP	—	—	191. 3 GBP	—	—	—	—	—	—	—	—	—	—
Comprehensive income, attributable to non-controlling interests	—	—	—	—	—	—	—	—	—	—	4,700,000 GBP	—	—	5,500,000 GBP	—	—	—	—	—	—	—	—	—	—