Statement Of Comprehensive Income [Abstract]

Admiral Group PLC - Filing #1610882

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	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)	1 . 2 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	9 97. 9 GBP	9 9 6 .7 GBP	9 97. 9 GBP	528. 8 GBP	– GBP	5 27. 8 GBP	– GBP	1 .0 GBP	– GBP	– GBP	528. 8 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	0. 3 GBP	– GBP	– GBP	– GBP	– GBP	1 0 . 1 GBP	1 0 . 1 GBP	10 . 4 GBP	– GBP	– GBP	– GBP	3. 5 GBP	3,400,000 GBP	100,000 GBP	– GBP	– GBP	3,400,000 GBP	– GBP
Cash flow hedges [abstract]
Other comprehensive income, net of tax, cash flow hedges	– GBP	– GBP	6,600,000 GBP	– GBP	– GBP	– GBP	6,600,000 GBP	6,600,000 GBP	– GBP	– GBP	– GBP	2 . 4 GBP	– GBP	– GBP	– GBP	2 .4 GBP	2 . 4 GBP	– GBP
Other comprehensive income	—	—	—	—	—	—	—	52 .5 GBP	—	—	—	39,900,000 GBP	—	—	—	—	—	—
Comprehensive income	1 . 5 GBP	– GBP	6,600,000 GBP	4 8 .7 GBP	– GBP	1 0 . 1 GBP	9 45 .7 GBP	94 4.2 GBP	9 97. 9 GBP	528,800,000 GBP	– GBP	5 6 7.7 GBP	3,400,000 GBP	0 . 9 GBP	– GBP	2 .4 GBP	568,600,000 GBP	38. 8 GBP
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	—	—	—	—	9 45 .7 GBP	—	—	—	568,600,000 GBP	—	—	—	—	—	—
Comprehensive income, attributable to non-controlling interests	—	—	—	—	—	—	—	1 . 5 GBP	—	—	—	0 . 9 GBP	—	—	—	—	—	—