Disclosure Of Interests In Other Entities [Text Block]
| Concept |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
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 |
As at 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of interests in other entities [text block] | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of interests in subsidiaries [text block] | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of subsidiaries [text block] | — | — | — | — |
|
— | — | — | — | — | — |
| Disclosure of subsidiaries [abstract] | |||||||||||
| Disclosure of subsidiaries [line items] | |||||||||||
| Current assets |
281,000,000
GBP
|
— | — | — | — | — | — | — | — |
378,000,000
GBP
|
— |
| Non-current assets |
17,538,000,000
GBP
|
— | — | — | — | — | — | — | — |
13,570,000,000
GBP
|
— |
| Current liabilities |
120,000,000
GBP
|
— | — | — | — | — | — | — | — |
324,000,000
GBP
|
— |
| Non-current liabilities |
855,000,000
GBP
|
— | — | — | — | — | — | — | — |
870,000,000
GBP
|
— |
| Revenue | — | — | — | — |
4,666,000,000
GBP
|
— | — | — |
4,079,000,000
GBP
|
— | — |
| Profit (loss) | — | — |
4,064,000,000
GBP
|
509,000,000
GBP
|
4,573,000,000
GBP
|
3,547,000,000
GBP
|
— |
466,000,000
GBP
|
4,013,000,000
GBP
|
— | — |
| Comprehensive income | — |
4,000,000
GBP
|
4,072,000,000
GBP
|
509,000,000
GBP
|
4,585,000,000
GBP
|
3,549,000,000
GBP
|
1,000,000
GBP
|
466,000,000
GBP
|
4,014,000,000
GBP
|
— | — |
| Disclosure of interests in associates [text block] | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of associates [text block] | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of associates [abstract] | |||||||||||
| Disclosure of associates [line items] | |||||||||||
| Other comprehensive income | — | — | — | — |
12,000,000
GBP
|
— | — | — |
1,000,000
GBP
|
— | — |
| Disclosure of interests in joint arrangements [text block] | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of joint ventures [text block] | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of joint ventures [abstract] | |||||||||||
| Disclosure of joint ventures [line items] | |||||||||||
| Cash and cash equivalents |
162,000,000
GBP
|
— | — | — | — | — | — | — | — |
212,000,000
GBP
|
216,000,000
GBP
|
| Interest income | — | — | — | — |
4,000,000
GBP
|
— | — | — |
–
GBP
|
— | — |
| Interest expense | — | — | — | — |
54,000,000
GBP
|
— | — | — |
53,000,000
GBP
|
— | — |
| Tax expense (income) | — | — | — | — |
2,000,000
GBP
|
— | — | — |
5,000,000
GBP
|
— | — |