Analysis Of Income And Expense [Abstract]

Safestore Holdings PLC - Filing #1845179

Concept	2021-11-01 to 2022-10-31	2021-11-01 to 2022-10-31	2021-11-01 to 2022-10-31	2021-11-01 to 2022-10-31	2021-11-01 to 2022-10-31	2020-11-01 to 2021-10-31	2020-11-01 to 2021-10-31	2020-11-01 to 2021-10-31	2020-11-01 to 2021-10-31	2020-11-01 to 2021-10-31
Analysis of income and expense [abstract]
Revenue [abstract]
Revenue	—	212,500,000 GBP	—	—	—	—	—	—	186,800,000 GBP	—
Expenses by nature [abstract]
Classes of employee benefits expense [abstract]
Expense from share-based payment transactions with employees	—	11,200,000 GBP	—	—	—	—	—	—	18,300,000 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	8,000,000 GBP	— GBP	— GBP	8,000,000 GBP	— GBP	— GBP	20,300,000 GBP	20,300,000 GBP	— GBP
Other comprehensive income, net of tax, hedges of net investments in foreign operations	— GBP	4,600,000 GBP	— GBP	— GBP	4,600,000 GBP	— GBP	— GBP	10,900,000 GBP	10,900,000 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	—	300,000 GBP	—	—	—	—	—	—	— GBP	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	— GBP	466,300,000 GBP	— GBP	462,900,000 GBP	3,400,000 GBP	— GBP	— GBP	9,400,000 GBP	372,600,000 GBP	382,000,000 GBP