Analysis Of Income And Expense [Abstract]
| Concept |
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 |
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 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||
| Revenue [abstract] | ||||||||||||||
| Revenue |
2,982,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2,553,700,000
GBP
|
| Miscellaneous other comprehensive income [abstract] | ||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations |
43,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
21,900,000
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 |
700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
500,000
GBP
|
| Share of other comprehensive income of associates and joint ventures accounted for using equity method, before tax [abstract] | ||||||||||||||
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, before tax |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
100,000
GBP
|
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss |
7,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
900,000
GBP
|
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss |
700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
300,000
GBP
|
| Income tax relating to components of other comprehensive income |
7,200,000
GBP
|
7,200,000
GBP
|
700,000
GBP
|
–
GBP
|
7,900,000
GBP
|
–
GBP
|
–
GBP
|
1,200,000
GBP
|
–
GBP
|
–
GBP
|
900,000
GBP
|
–
GBP
|
300,000
GBP
|
1,200,000
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income |
310,100,000
GBP
|
310,100,000
GBP
|
51,600,000
GBP
|
–
GBP
|
258,500,000
GBP
|
–
GBP
|
–
GBP
|
273,900,000
GBP
|
–
GBP
|
–
GBP
|
250,900,000
GBP
|
–
GBP
|
23,000,000
GBP
|
273,900,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent |
310,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
273,900,000
GBP
|