Statement Of Changes In Equity [Abstract]

Tritax Big Box REIT PLC - Filing #1872899

Concept	As at 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	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	3,350,000,000 GBP	—	—	—	—	764,300,000 GBP	835,100,000 GBP	1,731,900,000 GBP	18,700,000 GBP	—	2,331,300,000 GBP	964,500,000 GBP	4,076,500,000 GBP	—	—	762,000,000 GBP	—	18,700,000 GBP	—	—	1,358,700,000 GBP	17,200,000 GBP	466,500,000 GBP	2,921,300,000 GBP	1,078,900,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	599,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	972,600,000 GBP	—	—	—	—	—	—
Comprehensive income	—	— GBP	599,400,000 GBP	599,400,000 GBP	— GBP	—	—	—	—	— GBP	—	—	—	— GBP	— GBP	—	— GBP	—	972,600,000 GBP	972,600,000 GBP	—	—	—	—	—
Dividends recognised as distributions to owners	—	— GBP	129,400,000 GBP	— GBP	129,400,000 GBP	—	—	—	—	— GBP	—	—	—	— GBP	114,400,000 GBP	—	— GBP	—	114,400,000 GBP	— GBP	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	— GBP	5,300,000 GBP	5,300,000 GBP	— GBP	—	—	—	—	— GBP	—	—	—	— GBP	— GBP	—	— GBP	—	2,700,000 GBP	2,700,000 GBP	—	—	—	—	—