Disclosure Of Analysis Of Other Comprehensive Income By Item [Text Block]

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
Disclosure of analysis of other comprehensive income by item [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of analysis of other comprehensive income by item [abstract]
Disclosure of analysis of other comprehensive income by item [line items]
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, cash flow hedges	—	—	—	1,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,700,000 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
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
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