Statement Of Changes In Equity [Abstract]

Supermarket Income REIT PLC - Filing #1946464

Concept	2022-07-01 to 2023-06-30	2022-07-01 to 2023-06-30	2022-07-01 to 2023-06-30	As at 2023-06-30	As at 2023-06-30	2022-07-01 to 2023-06-30	As at 2023-06-30	2022-07-01 to 2023-06-30	As at 2023-06-30	2022-07-01 to 2023-06-30	As at 2023-06-30	As at 2023-06-30	As at 2022-06-30	As at 2022-06-30	As at 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	As at 2022-06-30	2021-07-01 to 2022-06-30	2021-07-01 to 2022-06-30	As at 2022-06-30	As at 2022-06-30	As at 2021-06-30	As at 2021-06-30	As at 2021-06-30	As at 2021-06-30	As at 2021-06-30	As at 2021-06-30
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	—	2,957,000 GBP	500,386,000 GBP	—	1,217,726,000 GBP	—	3,304,000 GBP	—	704,531,000 GBP	12,462,000 GBP	778,859,000 GBP	141,909,000 GBP	494,174,000 GBP	—	—	—	—	1,432,455,000 GBP	—	—	5,114,000 GBP	12,399,000 GBP	871,310,000 GBP	– GBP	778,859,000 GBP	8,107,000 GBP	84,796,000 GBP	452,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	– GBP	– GBP	144,866,000 GBP	—	—	– GBP	—	144,866,000 GBP	—	– GBP	—	—	—	—	—	– GBP	110,303,000 GBP	– GBP	– GBP	—	110,303,000 GBP	– GBP	—	—	—	—	—	—	—	—
Other comprehensive income	– GBP	– GBP	– GBP	—	—	– GBP	—	1,068,000 GBP	—	1,068,000 GBP	—	—	—	—	—	– GBP	5,566,000 GBP	5,566,000 GBP	– GBP	—	– GBP	– GBP	—	—	—	—	—	—	—	—
Comprehensive income	—	—	—	—	—	—	—	143,798,000 GBP	—	—	—	—	—	—	—	– GBP	115,869,000 GBP	5,566,000 GBP	– GBP	—	110,303,000 GBP	– GBP	—	—	—	—	—	—	—	—
Issue of equity	– GBP	6,301,000 GBP	– GBP	—	—	63,000 GBP	—	6,364,000 GBP	—	– GBP	—	—	—	—	—	– GBP	508,831,000 GBP	– GBP	4,292,000 GBP	—	– GBP	504,539,000 GBP	—	—	—	—	—	—	—	—