Analysis Of Income And Expense [Abstract]
| Concept |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2022-05-01 to 2023-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||||||
| Revenue |
8,221,000,000
GBP
|
— |
–
GBP
|
8,221,000,000
GBP
|
— | — | — | — | — | — | — | — |
–
GBP
|
7,241,000,000
GBP
|
— | — | — | — | — | — | — |
7, 241
GBP
|
| Material income and expense [abstract] | ||||||||||||||||||||||
| Finance income (cost) |
74,000,000
GBP
|
— |
–
GBP
|
74,000,000
GBP
|
— | — | — | — | — | — | — | — |
2,000,000
GBP
|
70,000,000
GBP
|
— | — | — | — | — | — | — |
72,000,000
GBP
|
| Operating expense |
7,36 0
GBP
|
— |
–
GBP
|
7,360,000,000
GBP
|
— | — | — | — | — | — | — | — |
37,000,000
GBP
|
6,625,000,000
GBP
|
— | — | — | — | — | — | — |
6,662,000,000
GBP
|
| Expenses by nature [abstract] | ||||||||||||||||||||||
| Classes of employee benefits expense [abstract] | ||||||||||||||||||||||
| Employee benefits expense |
1,000,000
GBP
|
— |
–
GBP
|
1,000,000
GBP
|
— | — | — | — | — | — | — | — |
–
GBP
|
3,000,000
GBP
|
— | — | — | — | — | — | — |
3,000,000
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 |
194,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
194,000,000
GBP
|
–
GBP
|
194,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
40,000,000
GBP
|
–
GBP
|
–
GBP
|
40,000,000
GBP
|
–
GBP
|
40,000,000
GBP
|
| Other comprehensive income, before tax, hedges of net investments in foreign operations |
74,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
74,000,000
GBP
|
–
GBP
|
74,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
28,000,000
GBP
|
–
GBP
|
–
GBP
|
28,000,000
GBP
|
–
GBP
|
28,000,000
GBP
|
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method |
2,000,000
GBP
|
— |
–
GBP
|
2,000,000
GBP
|
— | — | — | — | — | — | — | — |
–
GBP
|
7,000,000
GBP
|
— | — | — | — | — | — | — |
7,000,000
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 |
2,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
14,000,000
GBP
|
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss |
149,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
162,000,000
GBP
|
| Income tax relating to components of other comprehensive income |
147,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
147,000,000
GBP
|
2,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
149,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
14,000,000
GBP
|
176,000,000
GBP
|
–
GBP
|
–
GBP
|
1,000,000
GBP
|
163,000,000
GBP
|
176,000,000
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income |
133,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
13 2
GBP
|
508,000,000
GBP
|
120,000,000
GBP
|
1,000,000
GBP
|
–
GBP
|
4 96
GBP
|
–
GBP
|
— | — |
–
GBP
|
334,000,000
GBP
|
869,000,000
GBP
|
–
GBP
|
–
GBP
|
14,000,000
GBP
|
549,000,000
GBP
|
869,000,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent |
132,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
869,000,000
GBP
|
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests |
1,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|