Profit Or Loss [Abstract]

3i Group PLC - Filing #1635741

Concept	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	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31
Profit or loss [abstract]
Profit (loss) [abstract]
Revenue	—	—	—	—	—	—	—	4,079,000,000 GBP	—	—	—	—	—	—	1, 9 3 1 GBP	—	—	—
Other income	—	—	—	—	—	—	—	2,000,000 GBP	—	—	—	—	—	—	1,000,000 GBP	—	—	—
Other income (expense) from subsidiaries, jointly controlled entities and associates	—	—	—	—	—	—	—	32,000,000 GBP	—	—	—	—	—	—	22,000,000 GBP	—	—	—
Profit (loss) before tax	—	—	—	—	—	—	—	4 , 0 18 GBP	—	—	—	—	—	—	1, 8 5 5 GBP	—	—	—
Tax expense (income)	—	—	—	—	—	—	—	5,000,000 GBP	—	—	—	—	—	—	– GBP	—	—	—
Profit (loss)	– GBP	3 , 5 47 GBP	– GBP	– GBP	– GBP	466,000,000 GBP	– GBP	4 , 0 13 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	14 8 GBP	1, 8 5 5 GBP	– GBP	1, 7 0 7 GBP	– GBP
Earnings per share [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share	—	—	—	—	—	—	—	415 . 4	—	—	—	—	—	—	19 2 . 4	—	—	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share	—	—	—	—	—	—	—	414 . 3	—	—	—	—	—	—	19 1 .9	—	—	—