Profit Or Loss [Abstract]
| Concept |
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 |
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 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | ||||||||||||||||||||||
| Profit (loss) [abstract] | ||||||||||||||||||||||
| Revenue | — | — | — | — | — | — | — |
410,000,000
GBP
|
430,000,000
GBP
|
20,000,000
GBP
|
— | — | — |
468,000,000
GBP
|
–
GBP
|
468,000,000
GBP
|
— | — | — | — | — | — |
| Finance income | — | — | — | — | — | — | — |
67,000,000
GBP
|
–
GBP
|
67,000,000
GBP
|
— | — | — |
–
GBP
|
15,000,000
GBP
|
15,000,000
GBP
|
— | — | — | — | — | — |
| Finance costs | — | — | — | — | — | — | — |
62,000,000
GBP
|
55,000,000
GBP
|
7,000,000
GBP
|
— | — | — |
62,000,000
GBP
|
3,000,000
GBP
|
65,000,000
GBP
|
— | — | — | — | — | — |
| Profit (loss) before tax | — | — | — | — | — | — | — |
958,000,000
GBP
|
253,000,000
GBP
|
705,000,000
GBP
|
— | — | — |
204,000,000
GBP
|
1,257,000,000
GBP
|
1,053,000,000
GBP
|
— | — | — | — | — | — |
| Tax expense (income) | — | — | — | — | — | — | — |
2,000,000
GBP
|
4,000,000
GBP
|
2,000,000
GBP
|
— | — | — |
26,000,000
GBP
|
4,000,000
GBP
|
30,000,000
GBP
|
— | — | — | — | — | — |
| Profit (loss) |
958,000,000
GBP
|
–
GBP
|
2,000,000
GBP
|
958,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
960,000,000
GBP
|
257,000,000
GBP
|
703,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
178,000,000
GBP
|
1,261,000,000
GBP
|
1,083,000,000
GBP
|
–
GBP
|
–
GBP
|
1,031,000,000
GBP
|
–
GBP
|
52,000,000
GBP
|
1,031,000,000
GBP
|
| Profit (loss), attributable to [abstract] | ||||||||||||||||||||||
| Profit (loss), attributable to owners of parent | — | — | — | — | — | — | — |
958,000,000
GBP
|
255,000,000
GBP
|
703,000,000
GBP
|
— | — | — |
175,000,000
GBP
|
1,206,000,000
GBP
|
1,031,000,000
GBP
|
— | — | — | — | — | — |
| Profit (loss), attributable to non-controlling interests | — | — | — | — | — | — | — |
2,000,000
GBP
|
2,000,000
GBP
|
–
GBP
|
— | — | — |
3,000,000
GBP
|
55,000,000
GBP
|
52,000,000
GBP
|
— | — | — | — | — | — |
| Earnings per share [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Earnings per share [abstract] | ||||||||||||||||||||||
| Earnings per share [line items] | ||||||||||||||||||||||
| Basic earnings per share [abstract] | ||||||||||||||||||||||
| Basic earnings (loss) per share | — | — | — | — | — | — | — |
1.033
|
— | — | — | — | — | — | — |
1.112
|
— | — | — | — | — | — |
| Diluted earnings per share [abstract] | ||||||||||||||||||||||
| Diluted earnings (loss) per share | — | — | — | — | — | — | — |
1.030
|
— | — | — | — | — | — | — |
1.112
|
— | — | — | — | — | — |