Statement Of Changes In Equity [Abstract]

Informa PLC - Filing #1880902

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	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 changes in equity [abstract]
Statement of changes in equity [line items]
Dividends recognised as distributions to owners of parent	– GBP	43,300,000 GBP	– GBP	43,300,000 GBP	– GBP	43,300,000 GBP	– GBP	– GBP	—	—	—	—	—	—	—	—
Dividends recognised as distributions to non-controlling interests	– GBP	– GBP	– GBP	9,500,000 GBP	– GBP	– GBP	9,500,000 GBP	– GBP	8,600,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	8,600,000 GBP	– GBP
Increase (decrease) through acquisition of subsidiary, equity	– GBP	– GBP	– GBP	25,900,000 GBP	– GBP	– GBP	25,900,000 GBP	– GBP	108,200,000 GBP	– GBP	– GBP	– GBP	– GBP	101,700,000 GBP	209,900,000 GBP	101,700,000 GBP
Increase (decrease) through disposal of subsidiary, equity	—	—	—	—	—	—	—	—	1,500,000 GBP	– GBP	– GBP	– GBP	– GBP	1,500,000 GBP	– GBP	1,500,000 GBP
Increase (decrease) through exercise of options, equity	– GBP	– GBP	11,100,000 GBP	– GBP	– GBP	11,100,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	10,400,000 GBP	– GBP	– GBP	10,400,000 GBP
Purchase of treasury shares	– GBP	3,300,000 GBP	3,300,000 GBP	3,300,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	– GBP	2,500,000 GBP	2,500,000 GBP	2,500,000 GBP	– GBP
Share issue related cost	—	—	—	—	—	—	—	—	– GBP	200,000 GBP	– GBP	– GBP	– GBP	200,000 GBP	200,000 GBP	– GBP