Disclosure Of Income Tax [Text Block]
| Concept |
As at 2022-04-04 |
2021-04-05 to 2022-04-04 |
2020-04-05 to 2021-04-04 |
As at 2021-04-04 |
|---|---|---|---|---|
| Disclosure of income tax [text block] | — | — | — | — |
| Major components of tax expense (income) [abstract] | ||||
| Tax expense (income) | — |
345,000,000
GBP
|
205,000,000
GBP
|
— |
| Income tax relating to components of other comprehensive income [abstract] | ||||
| Income tax relating to cash flow hedges included in other comprehensive income | — |
4,000,000
GBP
|
41,000,000
GBP
|
— |
| Income tax relating to changes in revaluation surplus of property, plant and equipment, right-of-use assets and intangible assets included in other comprehensive income | — |
2,000,000
GBP
|
11,000,000
GBP
|
— |
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | — |
293,000,000
GBP
|
40,000,000
GBP
|
— |
| Income tax relating to investments in equity instruments included in other comprehensive income | — |
2,000,000
GBP
|
1,000,000
GBP
|
— |
| Income tax relating to change in value of foreign currency basis spreads included in other comprehensive income | — |
1,000,000
GBP
|
2,000,000
GBP
|
— |
| Income tax relating to financial assets measured at fair value through other comprehensive income included in other comprehensive income | — |
8,000,000
GBP
|
47,000,000
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 |
59,000,000
GBP
|
— | — |
72,000,000
GBP
|
| Deferred tax liabilities |
430,000,000
GBP
|
— | — |
150,000,000
GBP
|
| Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |