Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2023-04-01 |
As at 2023-04-01 |
As at 2023-04-01 |
As at 2023-04-01 |
As at 2023-04-01 |
As at 2023-04-01 |
As at 2023-04-01 |
As at 2022-04-02 |
As at 2022-04-02 |
As at 2022-04-02 |
As at 2022-04-02 |
As at 2022-04-02 |
As at 2022-04-02 |
As at 2022-04-02 |
As at 2021-04-03 |
As at 2021-04-03 |
As at 2021-04-03 |
As at 2021-04-03 |
As at 2021-04-03 |
As at 2021-04-03 |
As at 2021-04-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [abstract] | |||||||||||||||||||||
| Disclosure of fair value measurement of assets [line items] | |||||||||||||||||||||
| Assets | — | — |
2,405,900,000
GBP
|
— | — | — | — | — | — | — | — | — |
2,533,500,000
GBP
|
— | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [abstract] | |||||||||||||||||||||
| Disclosure of fair value measurement of liabilities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of liabilities [abstract] | |||||||||||||||||||||
| Disclosure of fair value measurement of liabilities [line items] | |||||||||||||||||||||
| Liabilities | — | — |
999,900,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,026,600,000
GBP
|
— | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, liabilities [abstract] | |||||||||||||||||||||
| Disclosure of fair value measurement of equity [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of equity [abstract] | |||||||||||||||||||||
| Disclosure of fair value measurement of equity [line items] | |||||||||||||||||||||
| Equity |
3,400,000
GBP
|
86,800,000
GBP
|
1,406,000,000
GBP
|
974,300,000
GBP
|
2,500,000
GBP
|
351,700,000
GBP
|
9,300,000
GBP
|
351,700,000
GBP
|
9,300,000
GBP
|
1,076,700,000
GBP
|
1,500,000
GBP
|
86,300,000
GBP
|
1,506,900,000
GBP
|
3,300,000
GBP
|
9,300,000
GBP
|
755,100,000
GBP
|
351,700,000
GBP
|
1,183,600,000
GBP
|
85,500,000
GBP
|
600,000
GBP
|
3,700,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |