Profit Or Loss [Abstract]

IG Group Holdings PLC - Filing #4974232

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
Profit or loss [abstract]
Profit (loss) [abstract]
Revenue	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Interest revenue calculated using effective interest method	—	—	—	—	—	—	—	163,620,000,000.000 RUB	—	—	—	128,084,000,000.000 RUB	—	—	—	—	—	—
Profit (loss) before tax	—	—	—	—	—	—	—	81,038,000,000.000 RUB	—	—	—	56,249,000,000.000 RUB	—	—	—	—	—	—
Tax expense (income)	—	—	—	—	—	—	—	17,670,000,000.000 RUB	—	—	—	12,036,000,000.000 RUB	—	—	—	—	—	—
Profit (loss)	103,000,000.000 RUB	- RUB	- RUB	- RUB	- RUB	- RUB	63,471,000,000.000 RUB	63,368,000,000.000 RUB	63,471,000,000.000 RUB	44,209,000,000.000 RUB	- RUB	44,213,000,000.000 RUB	4,000,000.000 RUB	- RUB	44,209,000,000.000 RUB	- RUB	- RUB	- RUB
Profit (loss), attributable to [abstract]
Profit (loss), attributable to owners of parent	—	—	—	—	—	—	—	63,471,000,000.000 RUB	—	—	—	44,209,000,000.000 RUB	—	—	—	—	—	—
Profit (loss), attributable to non-controlling interests	—	—	—	—	—	—	—	103,000,000.000 RUB	—	—	—	4,000,000.000 RUB	—	—	—	—	—	—
Earnings per share [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share	—	—	—	—	—	—	—	321,800,000.000	—	—	—	225,600,000.000	—	—	—	—	—	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share	—	—	—	—	—	—	—	314,880,000.000	—	—	—	223,730,000.000	—	—	—	—	—	—