Analysis Of Income And Expense [Abstract]
| Concept |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||
| Revenue |
22,448,000,000
GBP
|
— | — | — | — | — | — |
19,153,000,000
GBP
|
— | — | — | — | — |
17,697,000,000
GBP
|
— | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||||
| Other operating income (expense) |
2,349,000,000
GBP
|
— | — | — | — | — | — |
1,801,000,000
GBP
|
— | — | — | — | — |
3,120,000,000
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, hedges of net investments in foreign operations |
623,000,000
GBP
|
— | — | — | — | — | — |
810,000,000
GBP
|
— | — | — | — | — |
227,000,000
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 |
417,000,000
GBP
|
— | — | — | — | — | — |
334,000,000
GBP
|
— | — | — | — | — |
282,000,000
GBP
|
— | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income |
4,820,000,000
GBP
|
4,561,000,000
GBP
|
535,000,000
GBP
|
4,026,000,000
GBP
|
259,000,000
GBP
|
4,026,000,000
GBP
|
35,000,000
GBP
|
1,934,000,000
GBP
|
2,621,000,000
GBP
|
652,000,000
GBP
|
1,969,000,000
GBP
|
2,621,000,000
GBP
|
116,000,000
GBP
|
1,290,000,000
GBP
|
1,282,000,000
GBP
|
1,398,000,000
GBP
|
8,000,000
GBP
|
1,398,000,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent |
4,561,000,000
GBP
|
— | — | — | — | — | — |
1,969,000,000
GBP
|
— | — | — | — | — |
1,282,000,000
GBP
|
— | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests |
259,000,000
GBP
|
— | — | — | — | — | — |
35,000,000
GBP
|
— | — | — | — | — |
8,000,000
GBP
|
— | — | — | — |