Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2023-06-30 |
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2022-07-01 to 2023-06-30 |
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As at 2021-06-30 |
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As at 2020-06-30 |
As at 2020-06-30 |
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — |
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| 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 | — | — | — | — | — | — | — | — |
35,621,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
36,516,000,000
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 | — | — | — | — | — | — | — | — |
26,329,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
27,002,000,000
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 |
3,898,000,000
GBP
|
1,470,000,000
GBP
|
7,822,000,000
GBP
|
3,231,000,000
GBP
|
1,814,000,000
GBP
|
1,351,000,000
GBP
|
1,370,000,000
GBP
|
5,712,000,000
GBP
|
9,292,000,000
GBP
|
— |
712,000,000
GBP
|
3,550,000,000
GBP
|
1,351,000,000
GBP
|
1,716,000,000
GBP
|
3,220,000,000
GBP
|
7,798,000,000
GBP
|
1,046,000,000
GBP
|
5,388,000,000
GBP
|
9,514,000,000
GBP
|
1,838,000,000
GBP
|
723,000,000
GBP
|
8,431,000,000
GBP
|
8,682,000,000
GBP
|
3,202,000,000
GBP
|
1,351,000,000
GBP
|
741,000,000
GBP
|
1,534,000,000
GBP
|
3,184,000,000
GBP
|
1,877,000,000
GBP
|
1,581,000,000
GBP
|
3,435,000,000
GBP
|
5,312,000,000
GBP
|
741,000,000
GBP
|
251,000,000
GBP
|
3,202,000,000
GBP
|
6,897,000,000
GBP
|
1,351,000,000
GBP
|
7,148,000,000
GBP
|
1,581,000,000
GBP
|
5,061,000,000
GBP
|
1,877,000,000
GBP
|
1,534,000,000
GBP
|
251,000,000
GBP
|
251,000,000
GBP
|
251,000,000
GBP
|
2,407,000,000
GBP
|
1,668,000,000
GBP
|
1,351,000,000
GBP
|
6,772,000,000
GBP
|
1,936,000,000
GBP
|
742,000,000
GBP
|
4,343,000,000
GBP
|
8,440,000,000
GBP
|
929,000,000
GBP
|
3,201,000,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |