Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
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 |
|---|---|---|---|---|---|---|
| Statement of changes in net assets available for benefits [abstract] | ||||||
| Reconciliation of changes in net assets available for benefits [abstract] | ||||||
| Changes in net assets available for benefits [abstract] | ||||||
| Administrative expenses |
482,000,000
GBP
|
0 .8
GBP
|
481,200,000
GBP
|
3 55.7
GBP
|
300,000
GBP
|
356,000,000
GBP
|
| Tax expense (income) |
20,500,000
GBP
|
0 .1
GBP
|
20,600,000
GBP
|
14,700,000
GBP
|
–
GBP
|
14. 7
GBP
|