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 |
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 |
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) | — | — |
–
GBP
|
4,800,000
GBP
|
— | — |
4,800,000
GBP
|
— | — |
–
GBP
|
26,800,000
GBP
|
— | — | — | — |
26,800,000
GBP
|
| Tax expense (income) | — | — |
294,400,000
GBP
|
66,900,000
GBP
|
— | — |
361,300,000
GBP
|
— | — |
–
GBP
|
55,000,000
GBP
|
— | — | — | — |
55,000,000
GBP
|
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||
| Income tax relating to cash flow hedges included in other comprehensive income |
–
GBP
|
–
GBP
|
— | — |
13,000,000
GBP
|
–
GBP
|
13,000,000
GBP
|
— |
6,300,000
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
–
GBP
|
6,300,000
GBP
|
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income |
–
GBP
|
47,100,000
GBP
|
— | — |
–
GBP
|
–
GBP
|
47,100,000
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
30,800,000
GBP
|
30,800,000
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 | — | — | — | — | — | — | — |
1,320,600,000
GBP
|
— | — | — |
906,000,000
GBP
|
— | — | — | — |
| Deferred tax expense (income) [abstract] | ||||||||||||||||
| Deferred tax expense (income) | — | — |
294,400,000
GBP
|
71,700,000
GBP
|
— | — |
366,100,000
GBP
|
— | — |
–
GBP
|
28,200,000
GBP
|
— | — | — | — |
28,200,000
GBP
|
| 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] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |