Statement Of Comprehensive Income [Abstract]

Hammerson PLC - Filing #1872278

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
Statement of comprehensive income [abstract]
Profit (loss)	– GBP	– GBP	– GBP	164,200,000 GBP	164,200,000 GBP	– GBP	– GBP	– GBP	164,200,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	429,100,000 GBP	– GBP	– GBP	– GBP	429,100,000 GBP	429,100,000 GBP
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract]
Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans	– GBP	– GBP	– GBP	26,700,000 GBP	26,700,000 GBP	– GBP	– GBP	– GBP	26,700,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	18,900,000 GBP	– GBP	– GBP	– GBP	18,900,000 GBP	18,900,000 GBP
Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]
Exchange differences on translation [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
Cash flow hedges [abstract]
Other comprehensive income, net of tax, cash flow hedges	—	—	—	1,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,700,000 GBP	—
Hedges of net investment in foreign operations [abstract]
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
Other comprehensive income that will be reclassified to profit or loss, net of tax	—	—	—	48,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	27,900,000 GBP	—
Other comprehensive income	—	—	—	21,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	20,000,000 GBP	—
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