Disclosure Of Investment Property [Text Block]
| 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 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|
| Disclosure of investment property [text block] | — | — | — | — | — | — | — | — |
| Disclosure of detailed information about investment property [text block] | — | — | — | — | — | — | — | — |
| Disclosure of detailed information about investment property [abstract] | ||||||||
| Disclosure of detailed information about investment property [line items] | ||||||||
| Reconciliation of changes in investment property [abstract] | ||||||||
| Investment property |
2,295,000,000
GBP
|
— | — | — |
2,247,100,000
GBP
|
— | — | — |
| Changes in investment property [abstract] | ||||||||
| Gains (losses) on fair value adjustment, investment property | — |
136,500,000
GBP
|
–
GBP
|
136,500,000
GBP
|
— |
28,500,000
GBP
|
–
GBP
|
28,500,000
GBP
|