Disclosure Of Income Tax [Text Block]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|
| Disclosure of income tax [text block] |
2.1. Deferred tax
|
— | — | — | — | — | — | — |
| Major components of tax expense (income) [abstract] | ||||||||
| Tax expense (income) |
1,280,000,000
GBP
|
— | — | — | — | — |
1,425,000,000
GBP
|
— |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||
| Income tax relating to cash flow hedges included in other comprehensive income | — |
81,000,000
GBP
|
— | — |
152,000,000
GBP
|
— | — | — |
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | — | — |
40,000,000
GBP
|
— | — | — | — |
146,000,000
GBP
|
| Income tax relating to financial assets measured at fair value through other comprehensive income included in other comprehensive income | — | — | — |
8,000,000
GBP
|
— |
124,000,000
GBP
|
— | — |
| Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |