Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
As at 2021-09-30 |
As at 2020-09-30 |
As at 2020-09-30 |
As at 2020-09-30 |
As at 2020-09-30 |
As at 2020-09-30 |
As at 2020-09-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
3,896,000,000
GBP
|
— | — | — | — | — |
3,329,000,000
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 |
2,499,000,000
GBP
|
— | — | — | — | — |
2,218,000,000
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 |
1,397,000,000
GBP
|
12,000,000
GBP
|
206,000,000
GBP
|
570,000,000
GBP
|
61,000,000
GBP
|
548,000,000
GBP
|
1,111,000,000
GBP
|
42,000,000
GBP
|
448,000,000
GBP
|
61,000,000
GBP
|
12,000,000
GBP
|
548,000,000
GBP
|
123,000,000
GBP
|
908,000,000
GBP
|
61,000,000
GBP
|
1,652,000,000
GBP
|
12,000,000
GBP
|
548,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |