Profit Or Loss [Abstract]

Informa PLC - Filing #1880901

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	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	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31
Profit or loss [abstract]
Profit (loss) [abstract]
Revenue	—	—	2,262,400,000 GBP	—	2,262,400,000 GBP	– GBP	—	—	—	—	—	—	—	—	—	– GBP	1,583,300,000 GBP	—	1,583,300,000 GBP	—
Profit (loss) from operating activities	—	—	184,100,000 GBP	—	496,300,000 GBP	312,200,000 GBP	—	—	—	—	—	—	—	—	—	278,800,000 GBP	313,200,000 GBP	—	34,400,000 GBP	—
Finance income	—	—	27,500,000 GBP	—	27,500,000 GBP	– GBP	—	—	—	—	—	—	—	—	—	– GBP	5,700,000 GBP	—	5,700,000 GBP	—
Finance costs	—	—	74,100,000 GBP	—	72,800,000 GBP	1,300,000 GBP	—	—	—	—	—	—	—	—	—	– GBP	73,500,000 GBP	—	73,500,000 GBP	—
Share of profit (loss) of associates and joint ventures accounted for using equity method	—	—	2,000,000 GBP	—	2,100,000 GBP	100,000 GBP	—	—	—	—	—	—	—	—	—	– GBP	3,000,000 GBP	—	3,000,000 GBP	—
Profit (loss) before tax	—	—	168,800,000 GBP	—	451,000,000 GBP	282,200,000 GBP	—	—	—	—	—	—	—	—	—	167,000,000 GBP	245,400,000 GBP	—	78,400,000 GBP	—
Tax expense (income)	—	—	26,700,000 GBP	—	81,200,000 GBP	54,500,000 GBP	—	—	—	—	—	—	—	—	—	2,600,000 GBP	36,700,000 GBP	—	34,100,000 GBP	—
Profit (loss) from continuing operations	—	—	142,100,000 GBP	—	369,800,000 GBP	227,700,000 GBP	—	—	—	—	—	—	—	—	—	164,400,000 GBP	208,700,000 GBP	—	44,300,000 GBP	—
Profit (loss) from discontinued operations	—	—	1,493,200,000 GBP	—	29,500,000 GBP	1,463,700,000 GBP	—	—	—	—	—	—	—	—	—	13,500,000 GBP	57,400,000 GBP	—	43,900,000 GBP	—
Profit (loss)	– GBP	– GBP	1,635,300,000 GBP	1,631,500,000 GBP	399,300,000 GBP	1,236,000,000 GBP	3,800,000 GBP	1,631,500,000 GBP	– GBP	– GBP	10,300,000 GBP	– GBP	77,900,000 GBP	– GBP	– GBP	177,900,000 GBP	266,100,000 GBP	– GBP	88,200,000 GBP	77,900,000 GBP
Profit (loss), attributable to [abstract]
Profit (loss), attributable to owners of parent	—	—	1,631,500,000 GBP	—	386,000,000 GBP	1,245,500,000 GBP	—	—	—	—	—	—	—	—	—	173,900,000 GBP	251,800,000 GBP	—	77,900,000 GBP	—
Profit (loss), attributable to non-controlling interests	—	—	3,800,000 GBP	—	13,300,000 GBP	9,500,000 GBP	—	—	—	—	—	—	—	—	—	4,000,000 GBP	14,300,000 GBP	—	10,300,000 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 from continuing operations	—	—	0.095	—	0.245	—	—	—	—	—	—	—	—	—	—	—	0.130	—	0.023	—
Basic earnings (loss) per share	—	—	1.120	—	0.265	—	—	—	—	—	—	—	—	—	—	—	0.168	—	0.052	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share from continuing operations	—	—	0.094	—	0.244	—	—	—	—	—	—	—	—	—	—	—	0.129	—	0.023	—
Diluted earnings (loss) per share	—	—	1.114	—	0.264	—	—	—	—	—	—	—	—	—	—	—	0.167	—	0.052	—