Disclosure Of Fair Value Measurement [Text Block]
| Concept |
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 2021-03-27 |
As at 2021-03-27 |
As at 2021-03-27 |
As at 2021-03-27 |
As at 2021-03-27 |
As at 2021-03-27 |
As at 2021-03-27 |
As at 2020-03-28 |
As at 2020-03-28 |
As at 2020-03-28 |
As at 2020-03-28 |
As at 2020-03-28 |
As at 2020-03-28 |
As at 2020-03-28 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — |
3,697,000,000
GBP
|
— | — | — | — | — |
3,502,000,000
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 | — | — | — |
2,080,000,000
GBP
|
— | — | — | — | — |
1,942,000,000
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 |
1,123,000,000
GBP
|
227,000,000
GBP
|
–
GBP
|
1,617,000,000
GBP
|
263,000,000
GBP
|
1,613,000,000
GBP
|
4,000,000
GBP
|
242,000,000
GBP
|
1,092,000,000
GBP
|
1,560,000,000
GBP
|
–
GBP
|
223,000,000
GBP
|
1,557,000,000
GBP
|
3,000,000
GBP
|
1,219,000,000
GBP
|
221,000,000
GBP
|
–
GBP
|
291,000,000
GBP
|
5,000,000
GBP
|
702,000,000
GBP
|
1,214,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |