Disclosure Of Income Tax [Text Block]
| Concept |
2022-01-01 to 2022-12-31 |
As at 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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of income tax [text block] | — | — |
A12. Income tax expense
|
— | — | — | — | — | — | — | — |
| Major components of tax expense (income) [abstract] | |||||||||||
| Tax expense (income) |
58,000,000
GBP
|
— |
64,000,000
GBP
|
— | — |
50,000,000
GBP
|
62,000,000
GBP
|
— | — |
44,000,000
GBP
|
40,000,000
GBP
|
| Income tax relating to components of other comprehensive income [abstract] | |||||||||||
| Income tax relating to components of other comprehensive income | — | — |
11,000,000
GBP
|
11,000,000
GBP
|
— | — |
2,000,000
GBP
|
2,000,000
GBP
|
4,000,000
GBP
|
4,000,000
GBP
|
— |
| Disclosure of temporary difference, unused tax losses and unused tax credits [text block] | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of temporary difference, unused tax losses and unused tax credits [abstract] | |||||||||||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | |||||||||||
| Deferred tax assets and liabilities [abstract] | |||||||||||
| Deferred tax assets | — |
43,000,000
GBP
|
— | — |
42,000,000
GBP
|
— | — | — | — | — | — |
| Deferred tax liabilities | — |
511,000,000
GBP
|
— | — |
108,000,000
GBP
|
— | — | — | — | — | — |
| Reconciliation of changes in deferred tax liability (asset) [abstract] | |||||||||||
| Changes in deferred tax liability (asset) [abstract] | |||||||||||
| Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |