Analysis Of Income And Expense [Abstract]
| Concept |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||
| Revenue [abstract] | ||||||||||||||
| Interest income | — | — | — | — |
4,600,000
GBP
|
— | — |
6,000,000
GBP
|
— | — | — | — | — | — |
| Revenue | — | — | — | — |
267,100,000
GBP
|
— | — |
279,200,000
GBP
|
— | — | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||
| Gains (losses) on disposals of non-current assets [abstract] | ||||||||||||||
| Gains on disposals of non-current assets | — | — | — | — |
54,800,000
GBP
|
— | — |
64,400,000
GBP
|
— | — | — | — | — | — |
| Gains (losses) on disposals of investment properties [abstract] | ||||||||||||||
| Gains on disposals of investment properties | — | — | — | — |
3,300,000
GBP
|
— | — |
1,700,000
GBP
|
— | — | — | — | — | — |
| Rental income | — | — | — | — |
96,500,000
GBP
|
— | — |
86,300,000
GBP
|
— | — | — | — | — | — |
| Fee and commission income (expense) [abstract] | ||||||||||||||
| Fee and commission income [abstract] | ||||||||||||||
| Fee and commission income | — | — | — | — |
5,000,000
GBP
|
— | — |
4,400,000
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 | — | — | — | — |
100,000
GBP
|
— | — |
1,200,000
GBP
|
— | — | — | — | — | — |
| Share of profit (loss) of joint ventures accounted for using equity method | — | — | — | — |
300,000
GBP
|
— | — |
1,700,000
GBP
|
— | — | — | — | — | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | — | — | — |
300,000
GBP
|
— | — |
1,400,000
GBP
|
— | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — | — | — |
4,000,000
GBP
|
— | — |
11,900,000
GBP
|
— | — | — | — | — | — |
| Income tax relating to components of other comprehensive income | — | — | — | — |
4,300,000
GBP
|
— | — |
13,300,000
GBP
|
— | — | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
12,100,000
GBP
|
12,700,000
GBP
|
24,800,000
GBP
|
–
GBP
|
269,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
35,400,000
GBP
|
–
GBP
|
233,700,000
GBP
|