Statement Of Comprehensive Income [Abstract]
| Concept |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
2021-10-01 to 2022-09-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
211,000,000
GBP
|
211,000,000
GBP
|
–
GBP
|
329,000,000
GBP
|
118,000,000
GBP
|
260,000,000
GBP
|
260,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3,000,000
GBP
|
263,000,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||
| Other comprehensive income | — | — |
78,000,000
GBP
|
— | — | — | — |
197,000,000
GBP
|
— | — | — | — | — | — |
| Comprehensive income |
–
GBP
|
–
GBP
|
133,000,000
GBP
|
211,000,000
GBP
|
78,000,000
GBP
|
— | — |
457,000,000
GBP
|
293,000,000
GBP
|
–
GBP
|
164,000,000
GBP
|
–
GBP
|
— | — |
| Comprehensive income attributable to [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
133,000,000
GBP
|
— | — | — | — |
457,000,000
GBP
|
— | — | — | — | — | — |