Statement Of Changes In Equity [Abstract]

Close Brothers Group PLC - Filing #2522033

Concept	2023-08-01 to 2024-07-31	2023-08-01 to 2024-07-31	As at 2024-07-31	As at 2024-07-31	As at 2024-07-31	As at 2024-07-31	As at 2024-07-31	As at 2024-07-31	As at 2024-07-31	As at 2024-07-31	2023-08-01 to 2024-07-31	2023-08-01 to 2024-07-31	2023-08-01 to 2024-07-31	2023-08-01 to 2024-07-31	2023-08-01 to 2024-07-31	2023-08-01 to 2024-07-31	2023-08-01 to 2024-07-31	As at 2024-07-31	As at 2023-07-31	As at 2023-07-31	2022-08-01 to 2023-07-31	2022-08-01 to 2023-07-31	As at 2023-07-31	As at 2023-07-31	As at 2023-07-31	As at 2023-07-31	2022-08-01 to 2023-07-31	2022-08-01 to 2023-07-31	As at 2023-07-31	2022-08-01 to 2023-07-31	As at 2023-07-31	2022-08-01 to 2023-07-31	2022-08-01 to 2023-07-31	2022-08-01 to 2023-07-31	2022-08-01 to 2023-07-31	As at 2023-07-31	As at 2022-07-31	As at 2022-07-31	As at 2022-07-31	As at 2022-07-31	As at 2022-07-31	As at 2022-07-31	As at 2022-07-31	As at 2022-07-31	As at 2022-07-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	38,000,000 GBP	1,634,400,000 GBP	1,842,500,000 GBP	33,800,000 GBP	5,300,000 GBP	13,000,000 GBP	1,400,000 GBP	197. 6 GBP	—	—	—	—	—	—	—	1,842,500,000 GBP	38,000,000 GBP	1,608,500,000 GBP	—	—	2,700,000 GBP	— GBP	1,300,000 GBP	32,000,000 GBP	—	—	34,400,000 GBP	—	1,644,900,000 GBP	—	—	—	—	1,644,900,000 GBP	38,000,000 GBP	1,628,400,000 GBP	1,657,500,000 GBP	— GBP	29,200,000 GBP	100,000 GBP	1,500,000 GBP	21,700,000 GBP	1,657,500,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	— GBP	100,400,000 GBP	—	—	—	—	—	—	—	—	100,400,000 GBP	— GBP	— GBP	100,400,000 GBP	— GBP	— GBP	— GBP	—	—	—	— GBP	81,100,000 GBP	—	—	—	—	81,100,000 GBP	— GBP	—	— GBP	—	81,100,000 GBP	— GBP	— GBP	— GBP	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	— GBP	— GBP	—	—	—	—	—	—	—	—	24,100,000 GBP	21. 4 GBP	100,000 GBP	24,100,000 GBP	— GBP	— GBP	2,600,000 GBP	—	—	—	— GBP	4,100,000 GBP	—	—	—	—	6,000,000 GBP	12,700,000 GBP	—	— GBP	—	6,000,000 GBP	— GBP	2,800,000 GBP	200,000 GBP	—	—	—	—	—	—	—	—	—	—
Comprehensive income	— GBP	100,400,000 GBP	—	—	—	—	—	—	—	—	76,300,000 GBP	21,400,000 GBP	100,000 GBP	76,300,000 GBP	— GBP	— GBP	2,600,000 GBP	—	—	—	— GBP	77,000,000 GBP	—	—	—	—	87,100,000 GBP	12,700,000 GBP	—	— GBP	—	87,100,000 GBP	— GBP	2,800,000 GBP	200,000 GBP	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	— GBP	67,100,000 GBP	—	—	—	—	—	—	—	—	67,100,000 GBP	— GBP	— GBP	67,100,000 GBP	— GBP	— GBP	— GBP	—	—	—	— GBP	99,100,000 GBP	—	—	—	—	99,100,000 GBP	— GBP	—	— GBP	—	99,100,000 GBP	— GBP	— GBP	— GBP	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through other changes, equity	— GBP	3,700,000 GBP	—	—	—	—	—	—	—	—	800,000 GBP	— GBP	— GBP	800,000 GBP	— GBP	2,900,000 GBP	— GBP	—	—	—	— GBP	2,300,000 GBP	—	—	—	—	1,100,000 GBP	— GBP	—	— GBP	—	1,100,000 GBP	3,400,000 GBP	— GBP	— GBP	—	—	—	—	—	—	—	—	—	—