Disclosure Of Income Tax [Text Block]
| Concept |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
As at 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of income tax [text block] | — | — | — | — | — | — | — | — | — | — | — | — |
| Major components of tax expense (income) [abstract] | ||||||||||||
| Current tax expense (income) and adjustments for current tax of prior periods [abstract] | ||||||||||||
| Current tax expense (income) | — | — | — | — |
65,800,000
GBP
|
— | — | — | — | — | — |
79,200,000
GBP
|
| Tax expense (income) | — | — | — | — |
496,700,000
GBP
|
— | — | — | — | — | — |
97,600,000
GBP
|
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||
| Income tax relating to components of other comprehensive income |
–
GBP
|
109,400,000
GBP
|
26,800,000
GBP
|
–
GBP
|
136,200,000
GBP
|
— |
600,000
GBP
|
–
GBP
|
–
GBP
|
— |
34,200,000
GBP
|
34,800,000
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 liabilities | — | — | — | — | — |
2,148,100,000
GBP
|
— | — | — |
1,449,500,000
GBP
|
— | — |
| Deferred tax expense (income) [abstract] | ||||||||||||
| Deferred tax expense (income) | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax expense (income) recognised in profit or loss | — | — | — | — |
562,500,000
GBP
|
— | — | — | — | — | — |
18,400,000
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] | ||||||||||||
| Disclosure of information about Pillar Two income taxes [abstract] | ||||||||||||
| Disclosure of statement that information is not known or reasonably estimable and entity's progress in assessing exposure to Pillar Two income taxes [text block] | — | — | — | — | — | — | — | — | — | — | — | — |