Profit Or Loss [Abstract]

OSB Group PLC - Filing #5817375

Concept	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31
Profit or loss [abstract]
Profit (loss) [abstract]
Revenue	—	—	—	—	—	—	—	6 6 7. 2 GBP	—	—	6 5 8 .1 GBP	—	—	—	—	—	—	—	—	—
Other income	—	—	—	—	—	—	—	4,700,000 GBP	—	—	3 .9 GBP	—	—	—	—	—	—	—	—	—
Administrative expenses	—	—	—	—	—	—	—	2 5 8 .1 GBP	—	—	2 3 4.6 GBP	—	—	—	—	—	—	—	—	—
Impairment loss (impairment gain and reversal of impairment loss) determined in accordance with IFRS 9	—	—	—	—	—	—	—	11. 7 GBP	—	—	4 8. 8 GBP	—	—	—	—	—	—	—	—	—
Profit (loss) before tax	—	—	—	—	—	—	—	4 1 8 .1 GBP	—	—	37 4. 3 GBP	—	—	—	—	—	—	—	—	—
Tax expense (income)	—	—	—	—	—	—	—	110,000,000 GBP	—	—	91,700,000 GBP	—	—	—	—	—	—	—	—	—
Profit (loss)	– GBP	– GBP	– GBP	– GBP	– GBP	308. 1 GBP	– GBP	308,100,000 GBP	– GBP	– GBP	282,600,000 GBP	– GBP	282. 6 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP
Earnings per share [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share	—	—	—	—	—	—	—	7 7. 6	—	—	6 6 .1	—	—	—	—	—	—	—	—	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share	—	—	—	—	—	—	—	0.757	—	—	0.650	—	—	—	—	—	—	—	—	—