Disclosure Of Financial Instruments [Text Block]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-01-01 |
|---|---|---|---|---|---|
| Disclosure of financial instruments [text block] |
|
— | — | — | — |
| Description of accounting policy for financial instruments [text block] |
|
— | — | — | — |
| Disclosure of financial assets [text block] | — | — | — | — | — |
| Disclosure of financial assets [abstract] | |||||
| Disclosure of financial assets [line items] | |||||
| Financial assets | — |
3,691,600,000
GBP
|
3,696,400,000
GBP
|
— |
4,630,300,000
GBP
|
| Income, expense, gains or losses of financial instruments [abstract] | |||||
| Gains (losses) on financial instruments [abstract] | |||||
| Other comprehensive income, before tax, gains (losses) from investments in equity instruments |
3,300,000
GBP
|
— | — |
600,000
GBP
|
— |
| Disclosure of nature and extent of risks arising from financial instruments [text block] | — | — | — | — | — |
| Disclosure of nature and extent of risks arising from financial instruments [abstract] | |||||
| Disclosure of nature and extent of risks arising from financial instruments [line items] | |||||
| Sensitivity analysis for types of market risk [text block] |
|
— | — | — | — |
| Disclosure of credit risk [text block] |
|
— | — | — | — |
| Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [text block] | — | — | — | — | — |
| Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [abstract] | |||||
| Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] | |||||
| Disclosure of credit risk exposure [text block] | — | — | — | — | — |
| Disclosure of credit risk exposure [abstract] | |||||
| Disclosure of credit risk exposure [line items] | |||||
| Disclosure of provision matrix [text block] | — | — | — | — | — |
| Disclosure of provision matrix [abstract] | |||||
| Disclosure of provision matrix [line items] | |||||
| Disclosure of financial assets that are either past due or impaired [text block] | — | — | — | — | — |
| Disclosure of financial assets that are either past due or impaired [abstract] | |||||
| Disclosure of financial assets that are either past due or impaired [line items] | |||||
| Disclosure of financial instruments by type of interest rate [text block] | — | — | — | — | — |
| Disclosure of financial instruments by type of interest rate [abstract] | |||||
| Disclosure of financial instruments by type of interest rate [line items] | |||||
| Disclosure of detailed information about borrowings [text block] | — | — | — | — | — |
| Disclosure of detailed information about borrowings [abstract] | |||||
| Disclosure of detailed information about borrowings [line items] | |||||
| Borrowings | — |
82,400,000
GBP
|
65,200,000
GBP
|
— |
59,200,000
GBP
|
| Disclosure of financial assets at date of initial application of IFRS 9 [text block] |
|
— | — | — | — |