Disclosure Of Employee Benefits [Text Block]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|
| Disclosure of employee benefits [text block] | — | — | — | — | — | — | — | — | — |
| Disclosure of information about defined benefit plans [abstract] | |||||||||
| Disclosure of defined benefit plans [text block] | — | — | — | — | — | — | — | — | — |
| Disclosure of defined benefit plans [abstract] | |||||||||
| Disclosure of defined benefit plans [line items] | |||||||||
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans [abstract] | |||||||||
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans |
289,000,000
GBP
|
289,000,000
GBP
|
289,000,000
GBP
|
431,000,000
GBP
|
431,000,000
GBP
|
431,000,000
GBP
|
455,000,000
GBP
|
455,000,000
GBP
|
455,000,000
GBP
|
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans [abstract] | |||||||||
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans |
402,000,000
GBP
|
— | — |
598,000,000
GBP
|
— | — | — |
722,000,000
GBP
|
— |