Statement Of Comprehensive Income [Abstract]

CMC Markets PLC - Filing #3479907

Concept	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31
Statement of comprehensive income [abstract]
Profit (loss)	41 , 4 3 9 GBP	— GBP	— GBP	— GBP	— GBP	41 , 4 3 9 GBP	— GBP	— GBP	— GBP	71,479,000 GBP	— GBP	— GBP	71, 479 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]
Gains (losses) on exchange differences on translation of foreign operations, net of tax	1 ,76 0 GBP	— GBP	1 , 76 0 GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	1,76 1 GBP	— GBP	1 ,761 GBP	— GBP
Hedges of net investment in foreign operations [abstract]
Gains (losses) on hedges of net investments in foreign operations, net of tax	8 6 GBP	— GBP	86,000 GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	1, 08 9 GBP	— GBP	1, 08 9 GBP	— GBP
Financial assets measured at fair value through other comprehensive income [abstract]
Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax	2 10 GBP	— GBP	21 0 GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	5 4 GBP	— GBP	5 4 GBP	— GBP
Other comprehensive income	1 , 81 9 GBP	—	—	—	—	—	—	—	—	—	—	—	618,000 GBP	—
Comprehensive income	39,620,000 GBP	— GBP	1 , 81 9 GBP	— GBP	— GBP	41 , 4 3 9 GBP	— GBP	— GBP	— GBP	71 ,479 GBP	618,000 GBP	— GBP	72 ,0 97 GBP	— GBP