Analysis Of Income And Expense [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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||
| Revenue [abstract] | ||||||||||||||
| Revenue | — | — |
–
GBP
|
1,943,300,000
GBP
|
— | — |
1,943,300,000
GBP
|
— |
–
GBP
|
— | — |
1,827,200,000
GBP
|
— |
1,827,200,000
GBP
|
| Material income and expense [abstract] | ||||||||||||||
| Finance income (cost) | — | — | — |
269,400,000
GBP
|
— | — |
269,400,000
GBP
|
— |
–
GBP
|
— | — |
187,100,000
GBP
|
— |
187,100,000
GBP
|
| Operating expense | — | — |
2,100,000
GBP
|
1,440,300,000
GBP
|
— | — |
1,442,400,000
GBP
|
— |
2,100,000
GBP
|
— | — |
1,354,400,000
GBP
|
— |
1,356,500,000
GBP
|
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||
| Share of profit (loss) of joint ventures accounted for using equity method | — | — |
–
GBP
|
2,200,000
GBP
|
— | — |
2,200,000
GBP
|
— |
4,900,000
GBP
|
— | — |
8,900,000
GBP
|
— |
13,800,000
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income |
–
GBP
|
62,600,000
GBP
|
— | — |
46,700,000
GBP
|
–
GBP
|
109,300,000
GBP
|
33,800,000
GBP
|
— |
–
GBP
|
–
GBP
|
— |
81,000,000
GBP
|
114,800,000
GBP
|