Statement Of Financial Position [Abstract]

IG Group Holdings PLC - Filing #1755413

Concept	As at 2022-05-31	As at 2022-05-31	As at 2022-05-31	As at 2022-05-31	As at 2022-05-31	As at 2022-05-31	As at 2022-05-31	As at 2021-05-31	As at 2021-05-31	As at 2021-05-31	As at 2021-05-31	As at 2021-05-31	As at 2021-05-31	As at 2021-05-31	As at 2020-05-31	As at 2020-05-31	As at 2020-05-31	As at 2020-05-31	As at 2020-05-31	As at 2020-05-31	As at 2020-05-31
Statement of financial position [abstract]
Assets [abstract]
Property, plant and equipment	—	—	—	—	—	—	36,600,000 GBP	—	—	38 .6 GBP	—	—	—	—	—	—	—	—	—	—	—
Goodwill	—	—	—	—	—	—	60 4 .7 GBP	—	—	1 0 7. 3 GBP	—	—	—	—	—	—	—	—	—	—	—
Intangible assets other than goodwill	—	—	—	—	—	—	2 9 2 .1 GBP	—	—	32,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—
Deferred tax assets	—	—	—	—	—	—	1 7. 5 GBP	—	—	12 . 9 GBP	—	—	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	—	—	—	—	1 ,246.4 GBP	—	—	655,200,000 GBP	—	—	—	—	—	—	—	—	—	486,200,000 GBP	—
Assets	—	—	—	—	—	—	3 ,12 6 .1 GBP	—	—	1, 7 2 8 .1 GBP	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Retained earnings	—	—	—	—	—	—	1 , 1 86.0 GBP	—	—	860,500,000 GBP	—	—	—	—	—	—	—	—	—	—	—
Other reserves	—	—	—	—	—	—	8. 4 GBP	—	—	12 . 8 GBP	—	—	—	—	—	—	—	—	—	—	—
Equity	59 0.0 GBP	117. 6 GBP	– GBP	12 5 . 8 GBP	8. 4 GBP	1 , 1 86.0 GBP	2 , 0 2 7. 8 GBP	53,200,000 GBP	– GBP	1 , 1 33.3 GBP	125 . 8 GBP	81. 0 GBP	12 . 8 GBP	860,500,000 GBP	12 5 . 8 GBP	– GBP	81 . 0 GBP	74 .1 GBP	6 41 . 7 GBP	935 . 9 GBP	1 3.3 GBP
Liabilities [abstract]
Current tax liabilities	—	—	—	—	—	—	20,500,000 GBP	—	—	6,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—
Deferred tax liabilities	—	—	—	—	—	—	6 7. 2 GBP	—	—	800,000 GBP	—	—	—	—	—	—	—	—	—	—	—
Liabilities included in disposal groups classified as held for sale	—	—	—	—	—	—	800,000 GBP	—	—	– GBP	—	—	—	—	—	—	—	—	—	—	—
Liabilities	—	—	—	—	—	—	1 ,098.3 GBP	—	—	594,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities	—	—	—	—	—	—	3 ,12 6 .1 GBP	—	—	1, 7 2 8 .1 GBP	—	—	—	—	—	—	—	—	—	—	—