Analysis Of Income And Expense [Abstract]

Hammerson PLC - Filing #1872277

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
Analysis of income and expense [abstract]
Revenue [abstract]
Revenue	—	—	—	131,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	137,200,000 GBP	—
Miscellaneous other comprehensive income [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations	– GBP	– GBP	130,700,000 GBP	130,600,000 GBP	– GBP	100,000 GBP	– GBP	– GBP	130,700,000 GBP	– GBP	– GBP	– GBP	– GBP	139,700,000 GBP	139,700,000 GBP	– GBP	– GBP	– GBP	139,700,000 GBP	– GBP
Other comprehensive income, net of tax, hedges of net investments in foreign operations	– GBP	– GBP	103,400,000 GBP	103,400,000 GBP	– GBP	– GBP	– GBP	– GBP	103,400,000 GBP	– GBP	– GBP	– GBP	– GBP	112,200,000 GBP	112,200,000 GBP	– GBP	– GBP	– GBP	112,200,000 GBP	– GBP
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of associates accounted for using equity method	—	—	—	7,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	15,600,000 GBP	—
Share of profit (loss) of joint ventures accounted for using equity method	—	—	—	41,500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	171,300,000 GBP	—
Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of tax [abstract]
Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of tax	– GBP	– GBP	– GBP	23,300,000 GBP	23,300,000 GBP	– GBP	– GBP	– GBP	23,300,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	1,300,000 GBP	– GBP	– GBP	– GBP	1,300,000 GBP	1,300,000 GBP
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	– GBP	– GBP	25,400,000 GBP	142,300,000 GBP	167,600,000 GBP	100,000 GBP	– GBP	– GBP	142,200,000 GBP	– GBP	– GBP	– GBP	– GBP	40,200,000 GBP	449,100,000 GBP	– GBP	– GBP	– GBP	449,100,000 GBP	408,900,000 GBP