Statement Of Comprehensive Income [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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||
| Profit (loss) |
–
GBP
|
561 . 0
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
561 .0
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
7 87. 2
GBP
|
7 87. 2
GBP
|
| Other comprehensive income [abstract] | ||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||||||
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans | — |
5. 2
GBP
|
— | — | — | — | — | — | — | — |
83,300,000
GBP
|
— |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — |
7. 6
GBP
|
— | — | — | — | — | — | — | — |
2 4.8
GBP
|
— |
| Other comprehensive income |
–
GBP
|
2,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
2,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
58 .5
GBP
|
58,500,000
GBP
|
| Comprehensive income | — |
558 .6
GBP
|
— | — | — | — | — | — | — | — |
8 45 .7
GBP
|
— |