Statement Of Changes In Equity [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 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 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 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — | — | — | — |
2,586,400,000
GBP
|
— |
–
GBP
|
1,563,700,000
GBP
|
–
GBP
|
646,000,000
GBP
|
8,800,000
GBP
|
250,100,000
GBP
|
–
GBP
|
2,586,400,000
GBP
|
— | — | — | — |
135,400,000
GBP
|
— |
2,745,900,000
GBP
|
252,900,000
GBP
|
1,593,200,000
GBP
|
221,000,000
GBP
|
100,000
GBP
|
2,746,000,000
GBP
|
374,100,000
GBP
|
198,200,000
GBP
|
207,600,000
GBP
|
–
GBP
|
374,100,000
GBP
|
243,500,000
GBP
|
110,000,000
GBP
|
221,000,000
GBP
|
110,000,000
GBP
|
100,000
GBP
|
2,746,000,000
GBP
|
1,593,200,000
GBP
|
2,745,900,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
9,400,000
GBP
|
–
GBP
|
3,500,000
GBP
|
9,400,000
GBP
|
3,500,000
GBP
|
–
GBP
|
110,000,000
GBP
|
— | — |
207,600,000
GBP
|
— | — |
374,100,000
GBP
|
1,593,200,000
GBP
|
— |
3,500,000
GBP
|
2,745,900,000
GBP
|
100,000
GBP
|
221,000,000
GBP
|
— | — |
243,500,000
GBP
|
— | — |
2,746,000,000
GBP
|
— |
400,000
GBP
|
150,200,000
GBP
|
1,611,900,000
GBP
|
3,208,900,000
GBP
|
663,000,000
GBP
|
100,000
GBP
|
3,208,800,000
GBP
|
202,900,000
GBP
|
374,100,000
GBP
|
207,100,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— |
164,200,000
GBP
|
— | — | — | — | — | — | — | — |
164,200,000
GBP
|
164,200,000
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
— |
–
GBP
|
–
GBP
|
— | — |
429,100,000
GBP
|
— | — | — | — |
429,100,000
GBP
|
–
GBP
|
— |
–
GBP
|
429,100,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — |
21,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
20,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
–
GBP
|
–
GBP
|
25,400,000
GBP
|
–
GBP
|
— |
142,300,000
GBP
|
— | — | — | — | — | — | — | — |
142,200,000
GBP
|
167,600,000
GBP
|
100,000
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
40,200,000
GBP
|
— |
–
GBP
|
–
GBP
|
— | — |
449,100,000
GBP
|
— | — | — | — |
408,900,000
GBP
|
–
GBP
|
— |
–
GBP
|
449,100,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— |
140,300,000
GBP
|
— | — | — | — | — | — | — | — |
140,300,000
GBP
|
140,300,000
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
— |
–
GBP
|
–
GBP
|
— | — |
135,700,000
GBP
|
— | — | — | — |
135,700,000
GBP
|
–
GBP
|
— |
–
GBP
|
135,700,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— |
3,000,000
GBP
|
— | — | — | — | — | — | — | — |
3,000,000
GBP
|
3,000,000
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
— |
–
GBP
|
3,300,000
GBP
|
— | — |
3,300,000
GBP
|
— | — | — | — |
–
GBP
|
–
GBP
|
— |
–
GBP
|
3,300,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |