Disclosure Of Analysis Of Other Comprehensive Income By Item [Text Block]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of analysis of other comprehensive income by item [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of analysis of other comprehensive income by item [abstract] | |||||||||||||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | |||||||||||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
302,000,000
GBP
|
10,000,000
GBP
|
300,000,000
GBP
|
2,000,000
GBP
|
— |
294,000,000
GBP
|
14,000,000
GBP
|
2,000,000
GBP
|
672,000,000
GBP
|
— |
7,000,000
GBP
|
— | — | — |
665,000,000
GBP
|
665,000,000
GBP
|
8,000,000
GBP
|
— |
595,000,000
GBP
|
595,000,000
GBP
|
— |
603,000,000
GBP
|
— |
| Other comprehensive income, net of tax, cash flow hedges |
663,000,000
GBP
|
— |
663,000,000
GBP
|
— | — | — | — |
663,000,000
GBP
|
943,000,000
GBP
|
— | — |
943,000,000
GBP
|
— | — |
943,000,000
GBP
|
— | — |
165,000,000
GBP
|
165,000,000
GBP
|
— | — |
165,000,000
GBP
|
— |
| Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income |
439,000,000
GBP
|
— |
437,000,000
GBP
|
2,000,000
GBP
|
— | — |
437,000,000
GBP
|
— |
1,886,000,000
GBP
|
— |
5,000,000
GBP
|
— | — |
1,881,000,000
GBP
|
1,881,000,000
GBP
|
— |
1,000,000
GBP
|
— |
236,000,000
GBP
|
— |
236,000,000
GBP
|
237,000,000
GBP
|
— |
| Other comprehensive income, net of tax, gains (losses) from investments in equity instruments |
1,000,000
GBP
|
— |
1,000,000
GBP
|
— | — | — |
1,000,000
GBP
|
— |
—
GBP
|
— | — | — | — | — |
—
GBP
|
— | — | — |
2,000,000
GBP
|
— |
2,000,000
GBP
|
2,000,000
GBP
|
— |
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans |
2,000,000
GBP
|
— |
2,000,000
GBP
|
— |
2,000,000
GBP
|
— | — | — |
38,000,000
GBP
|
38,000,000
GBP
|
— | — | — | — |
38,000,000
GBP
|
— | — | — |
44,000,000
GBP
|
— | — |
44,000,000
GBP
|
44,000,000
GBP
|
| Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability |
132,000,000
GBP
|
— |
132,000,000
GBP
|
— |
132,000,000
GBP
|
— | — | — |
329,000,000
GBP
|
329,000,000
GBP
|
— | — | — | — |
329,000,000
GBP
|
— | — | — |
2,000,000
GBP
|
— | — |
2,000,000
GBP
|
2,000,000
GBP
|
| Other comprehensive income, net of tax, insurance finance income (expenses) from insurance contracts issued excluded from profit or loss that will be reclassified to profit or loss |
298,000,000
GBP
|
298,000,000
GBP
|
298,000,000
GBP
|
— | — | — | — | — |
1,408,000,000
GBP
|
— | — | — |
1,408,000,000
GBP
|
— | — | — | — | — | — | — | — |
—
GBP
|
— |