Statement Of Comprehensive Income [Abstract]

RIT Capital Partners PLC - Filing #2007732

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	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	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31
Statement of comprehensive income [abstract]
Profit (loss)	66,100,000 GBP	– GBP	2,900,000 GBP	69,000,000 GBP	2,900,000 GBP	69,000,000 GBP	– GBP	2,900,000 GBP	– GBP	– GBP	– GBP	69,000,000 GBP	– GBP	– GBP	577 .2 GBP	1 4.3 GBP	– GBP	– GBP	562,900,000 GBP	14,300,000 GBP	14,300,000 GBP	562,900,000 GBP	562,900,000 GBP	– GBP
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets	900,000 GBP	– GBP	– GBP	900,000 GBP	—	—	– GBP	– GBP	– GBP	900,000 GBP	– GBP	– GBP	– GBP	– GBP	2,100,000 GBP	– GBP	2,100,000 GBP	– GBP	– GBP	—	– GBP	2,100,000 GBP	—	– GBP
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	400,000 GBP	– GBP	400,000 GBP	– GBP	—	—	– GBP	400,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	4,500,000 GBP	4,500,000 GBP	– GBP	– GBP	– GBP	—	4,500,000 GBP	– GBP	—	– GBP
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to remeasurements of defined benefit plans included in other comprehensive income	200,000 GBP	– GBP	200,000 GBP	– GBP	—	—	– GBP	200,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	1. 1 GBP	1. 1 GBP	– GBP	– GBP	– GBP	—	1. 1 GBP	– GBP	—	– GBP
Comprehensive income	66,800,000 GBP	– GBP	3,100,000 GBP	69,900,000 GBP	—	—	– GBP	3,100,000 GBP	– GBP	900,000 GBP	– GBP	69,000,000 GBP	– GBP	– GBP	582,700,000 GBP	17 .7 GBP	2,100,000 GBP	– GBP	562,900,000 GBP	—	17 .7 GBP	565,000,000 GBP	—	– GBP