Analysis Of Income And Expense [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||
| Revenue | — | — | — |
21, 25 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
19, 5 21
GBP
|
— |
| Material income and expense [abstract] | ||||||||||||||||||
| Finance income (cost) | — | — | — |
39 5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
27 9
GBP
|
— |
| Operating expense | — | — | — |
19,2 69
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
17, 7 4 3
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 | — | — | — |
18 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
13 9
GBP
|
— |
| Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of tax [abstract] | ||||||||||||||||||
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss, net of tax | — | — | — |
11 6
GBP
|
— | — | — |
–
GBP
|
11 6
GBP
|
— | — |
–
GBP
|
64,000,000
GBP
|
— | — | — |
64,000,000
GBP
|
— |
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax | — | — | — |
8,000,000
GBP
|
— | — | — |
8,000,000
GBP
|
–
GBP
|
— | — |
4,000,000
GBP
|
–
GBP
|
— | — | — |
4,000,000
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 | — | — | — |
357,000,000
GBP
|
— | — | — |
–
GBP
|
357,000,000
GBP
|
— | — |
–
GBP
|
39 4
GBP
|
— | — | — |
39 4
GBP
|
— |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — | — |
24,000,000
GBP
|
— | — | — |
24,000,000
GBP
|
–
GBP
|
— | — |
4,000,000
GBP
|
–
GBP
|
— | — | — |
4,000,000
GBP
|
— |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income |
–
GBP
|
5,239,000,000
GBP
|
1, 0 53
GBP
|
5, 358
GBP
|
–
GBP
|
4 ,18 6
GBP
|
11 9
GBP
|
1, 0 74
GBP
|
4,28 4
GBP
|
15 6
GBP
|
–
GBP
|
2,000,000
GBP
|
4 ,033
GBP
|
3,000,000
GBP
|
–
GBP
|
3, 879
GBP
|
4,035,000,000
GBP
|
3,8 8 2
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — |
5,2 39
GBP
|
— | — | — |
1,0 53
GBP
|
4 ,1 8 6
GBP
|
— | — |
3,000,000
GBP
|
3,8 8 2
GBP
|
— | — | — |
3, 879
GBP
|
— |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — |
119,000,000
GBP
|
— | — | — |
21,000,000
GBP
|
98,000,000
GBP
|
— | — |
5,000,000
GBP
|
151,000,000
GBP
|
— | — | — |
15 6
GBP
|
— |