Statement Of Comprehensive Income [Abstract]

TP ICAP Group PLC - Filing #1868413

Concept	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	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	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	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
Statement of comprehensive income [abstract]
Profit (loss)	– GBP	– GBP	– GBP	– GBP	106,000,000 GBP	– GBP	103,000,000 GBP	3,000,000 GBP	– GBP	– GBP	103,000,000 GBP	– GBP	3,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	5,000,000 GBP	– GBP	– GBP	8,000,000 GBP	5,000,000 GBP
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract]
Other comprehensive income, net of tax, gains (losses) from investments in equity instruments	—	—	—	—	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,000,000 GBP	—
Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans	—	—	—	—	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	3,000,000 GBP	—
Other comprehensive income that will not be reclassified to profit or loss, net of tax	—	—	—	—	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	4,000,000 GBP	—
Other comprehensive income that will be reclassified to profit or loss, net of tax	—	—	—	—	148,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	3,000,000 GBP	—
Other comprehensive income	– GBP	147,000,000 GBP	– GBP	– GBP	148,000,000 GBP	– GBP	– GBP	1,000,000 GBP	– GBP	– GBP	147,000,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	3,000,000 GBP	– GBP	1,000,000 GBP	7,000,000 GBP	– GBP	– GBP	7,000,000 GBP	3,000,000 GBP
Comprehensive income	– GBP	147,000,000 GBP	– GBP	– GBP	254,000,000 GBP	– GBP	103,000,000 GBP	4,000,000 GBP	– GBP	– GBP	250,000,000 GBP	– GBP	3,000,000 GBP	– GBP	– GBP	– GBP	3,000,000 GBP	– GBP	1,000,000 GBP	12,000,000 GBP	– GBP	– GBP	15,000,000 GBP	8,000,000 GBP
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	—	250,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	12,000,000 GBP	—
Comprehensive income, attributable to non-controlling interests	—	—	—	—	4,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	3,000,000 GBP	—