Statement Of Changes In Equity [Abstract]

OSB Group PLC - Filing #1871266

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	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	As at 2022-12-31	As at 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	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	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	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	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	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	2, 201.0 GBP	—	—	—	—	—	—	1,355. 1 GBP	– GBP	2 .4 GBP	13,200,000 GBP	3,389,400,000 GBP	2 . 2 GBP	4. 3 GBP	—	1. 3 GBP	0. 3 GBP	150,000,000 GBP	—	—	—	—	—	3. 5 GBP	3 , 2 1 5 .1 GBP	—	—	2,024. 4 GBP	—	1 .1 GBP	0. 6 GBP	150,000,000 GBP	—	—	1,3 55 .3 GBP	—	—	—	700,000 GBP	4,500,000 GBP	1 3 .4 GBP	– GBP	—	—	1,608 .6 GBP	60,000,000 GBP	1, 3 5 9. 8 GBP	– GBP	– GBP	4. 0 GBP	1,000,000 GBP	7. 8 GBP	1, 35 5. 3 GBP	1,67 6.9 GBP	1,000,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	– GBP	– GBP	410 .0 GBP	410. 0 GBP	– GBP	– GBP	—	—	—	—	—	—	—	– GBP	—	—	—	– GBP	– GBP	– GBP	– GBP	– GBP	—	—	– GBP	– GBP	—	– GBP	—	—	—	– GBP	– GBP	—	– GBP	– GBP	– GBP	—	—	—	—	345. 3 GBP	345. 3 GBP	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	—	—	0. 5 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	– GBP	– GBP	4 0 9. 5 GBP	410 .0 GBP	– GBP	– GBP	—	—	—	—	—	—	—	0 . 3 GBP	—	—	—	– GBP	– GBP	– GBP	0. 2 GBP	– GBP	—	—	– GBP	– GBP	—	– GBP	—	—	—	– GBP	0 .1 GBP	—	– GBP	0 .4 GBP	– GBP	—	—	—	—	3 44. 8 GBP	345. 3 GBP	—	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	– GBP	– GBP	1 3 3 .1 GBP	1 3 3 .1 GBP	– GBP	– GBP	—	—	—	—	—	—	—	– GBP	—	—	—	– GBP	– GBP	– GBP	– GBP	– GBP	—	—	– GBP	– GBP	—	– GBP	—	—	—	– GBP	– GBP	—	– GBP	– GBP	– GBP	—	—	—	—	86. 7 GBP	8 6. 7 GBP	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	—	– GBP	0 . 2 GBP	100,700,000 GBP	100,700,000 GBP	– GBP	– GBP	—	—	—	—	—	—	—	– GBP	—	—	—	0. 2 GBP	– GBP	– GBP	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	6 0 . 0 GBP	—	—	– GBP	– GBP	—	– GBP	—	—	—	– GBP	– GBP	—	– GBP	– GBP	– GBP	—	—	—	—	60 . 0 GBP	– GBP	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	– GBP	– GBP	9. 9 GBP	8,400,000 GBP	– GBP	– GBP	—	—	—	—	—	—	—	– GBP	—	—	—	– GBP	0 . 2 GBP	1,700,000 GBP	– GBP	– GBP	—	—	– GBP	– GBP	—	700,000 GBP	—	—	—	4,000,000 GBP	– GBP	—	– GBP	– GBP	– GBP	—	—	—	—	7. 6 GBP	2. 9 GBP	—	—	—	—	—	—	—	—	—	—	—