Analysis Of Income And Expense [Abstract]

Safestore Holdings PLC - Filing #1990463

Concept	2022-11-01 to 2023-10-31	2022-11-01 to 2023-10-31	2022-11-01 to 2023-10-31	2022-11-01 to 2023-10-31	2022-11-01 to 2023-10-31	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	2021-11-01 to 2022-10-31
Analysis of income and expense [abstract]
Revenue [abstract]
Revenue	—	—	—	224,200,000 GBP	—	—	212,500,000 GBP	—	—	—
Expenses by nature [abstract]
Classes of employee benefits expense [abstract]
Expense from share-based payment transactions with employees	—	—	—	3,500,000 GBP	—	—	11,200,000 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	7,100,000 GBP	7,100,000 GBP	— GBP	— GBP	8,000,000 GBP	— GBP	— GBP	8,000,000 GBP
Other comprehensive income, net of tax, hedges of net investments in foreign operations	— GBP	— GBP	2,900,000 GBP	2,900,000 GBP	— GBP	— GBP	4,600,000 GBP	— GBP	— GBP	4,600,000 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	—	—	—	— GBP	—	—	300,000 GBP	—	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	— GBP	200,200,000 GBP	4,200,000 GBP	204,400,000 GBP	— GBP	— GBP	466,300,000 GBP	— GBP	462,900,000 GBP	3,400,000 GBP