Statement Of Comprehensive Income [Abstract]

Admiral Group PLC - Filing #2008813

Concept	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	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	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
Statement of comprehensive income [abstract]
Profit (loss)	337,200,000 GBP	– GBP	338,000,000 GBP	800,000 GBP	338,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	285,300,000 GBP	286,500,000 GBP	1,200,000 GBP	– GBP	– GBP	– GBP	286,500,000 GBP	– GBP	– GBP
Other comprehensive income [abstract]
Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]
Exchange differences on translation [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations	3,700,000 GBP	—	—	—	—	—	—	—	—	—	—	4,300,000 GBP	—	—	—	—	—	—	—	—
Other comprehensive income	13,300,000 GBP	69,200,000 GBP	13,300,000 GBP	– GBP	– GBP	– GBP	3,700,000 GBP	– GBP	92,400,000 GBP	13,600,000 GBP	– GBP	73,800,000 GBP	– GBP	100,000 GBP	18,100,000 GBP	155,000,000 GBP	242,600,000 GBP	73,900,000 GBP	– GBP	4,400,000 GBP
Comprehensive income	350,500,000 GBP	69,200,000 GBP	351,300,000 GBP	800,000 GBP	338,000,000 GBP	– GBP	3,700,000 GBP	– GBP	92,400,000 GBP	13,600,000 GBP	– GBP	211,500,000 GBP	286,500,000 GBP	1,100,000 GBP	18,100,000 GBP	155,000,000 GBP	242,600,000 GBP	212,600,000 GBP	– GBP	4,400,000 GBP
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	351,300,000 GBP	—	—	—	—	—	—	—	—	—	—	212,600,000 GBP	—	—	—	—	—	—	—	—
Comprehensive income, attributable to non-controlling interests	800,000 GBP	—	—	—	—	—	—	—	—	—	—	1,100,000 GBP	—	—	—	—	—	—	—	—