Analysis Of Income And Expense [Abstract]

Tritax Big Box REIT PLC - Filing #2012546

Concept	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	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
Analysis of income and expense [abstract]
Material income and expense [abstract]
Gains (losses) on disposals of investment properties [abstract]
Gains (losses) on disposals of investment properties	—	—	1,600,000 GBP	—	—	—	— GBP	—	—	—
Other operating income (expense)	—	—	— GBP	—	—	—	9,300,000 GBP	—	—	—
Rental income	—	—	222,200,000 GBP	—	—	—	206,200,000 GBP	—	—	—
Property service charge income (expense) [abstract]
Property service charge income	—	—	6,200,000 GBP	—	—	—	6,300,000 GBP	—	—	—
Property service charge expense	—	—	6,300,000 GBP	—	—	—	6,500,000 GBP	—	—	—
Gains (losses) on change in fair value of derivatives [abstract]
Gains (losses) on change in fair value of derivatives	—	—	11,200,000 GBP	—	—	—	14,900,000 GBP	—	—	—
Expenses by nature [abstract]
Classes of employee benefits expense [abstract]
Expense from share-based payment transactions with employees	—	—	2,900,000 GBP	—	—	—	1,900,000 GBP	—	—	—
Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract]
Impairment loss (reversal of impairment loss) recognised in profit or loss	—	—	2,700,000 GBP	—	—	—	1,400,000 GBP	—	—	—
Other expenses, by nature	—	—	— GBP	—	—	—	9,000,000 GBP	—	—	—
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of joint ventures accounted for using equity method	—	—	400,000 GBP	—	—	—	500,000 GBP	—	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	— GBP	— GBP	70,000,000 GBP	70,000,000 GBP	— GBP	– GBP	599,400,000 GBP	– GBP	– GBP	599,400,000 GBP