Statement Of Comprehensive Income [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||||
| Profit (loss) | — |
1,253,000,000
GBP
|
— |
1,253,000,000
GBP
|
30,000,000
GBP
|
1,283,000,000
GBP
|
— | — |
1,725,000,000
GBP
|
— |
1,703,000,000
GBP
|
22,000,000
GBP
|
1,703,000,000
GBP
|
— | — | — |
553,000,000
GBP
|
563,000,000
GBP
|
10,000,000
GBP
|
— | — | — |
563,000,000
GBP
|
— |
| Other comprehensive income [abstract] | ||||||||||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, net of tax, gains (losses) from investments in equity instruments | — |
2,000,000
GBP
|
— | — | — |
2,000,000
GBP
|
— |
2,000,000
GBP
|
1,000,000
GBP
|
— |
1,000,000
GBP
|
— | — | — |
1,000,000
GBP
|
— |
—
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
|
— | — |
2,000,000
GBP
|
— |
2,000,000
GBP
|
— |
2,000,000
GBP
|
— | — | — |
38,000,000
GBP
|
38,000,000
GBP
|
— | — | — | — |
38,000,000
GBP
|
— |
| Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability | — |
40,000,000
GBP
|
— |
40,000,000
GBP
|
— |
40,000,000
GBP
|
— | — |
132,000,000
GBP
|
— |
132,000,000
GBP
|
— |
132,000,000
GBP
|
— | — | — |
329,000,000
GBP
|
329,000,000
GBP
|
— | — | — | — |
329,000,000
GBP
|
— |
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||||||||||||
| Gains (losses) on exchange differences on translation of foreign operations, net of tax |
28,000,000
GBP
|
533,000,000
GBP
|
542,000,000
GBP
|
2,000,000
GBP
|
7,000,000
GBP
|
540,000,000
GBP
|
— |
35,000,000
GBP
|
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
|
| Reclassification adjustments on exchange differences on translation of foreign operations, net of tax | — |
49,000,000
GBP
|
49,000,000
GBP
|
— | — |
49,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations | — | — | — | — | — |
491,000,000
GBP
|
— | — |
302,000,000
GBP
|
— | — | — | — | — | — | — |
672,000,000
GBP
|
— | — | — | — | — | — | — |
| Cash flow hedges [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, net of tax, cash flow hedges | — | — | — | — | — |
103,000,000
GBP
|
— | — |
663,000,000
GBP
|
— | — | — | — | — | — | — |
943,000,000
GBP
|
— | — | — | — | — | — | — |
| Financial assets measured at fair value through other comprehensive income [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income | — | — | — | — | — |
144,000,000
GBP
|
— | — |
439,000,000
GBP
|
— | — | — | — | — | — | — |
1,886,000,000
GBP
|
— | — | — | — | — | — | — |
| Insurance finance income (expenses) from insurance contracts issued excluded from profit or loss [abstract] | ||||||||||||||||||||||||
| 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 |
108,000,000
GBP
|
108,000,000
GBP
|
— | — | — |
108,000,000
GBP
|
— | — |
298,000,000
GBP
|
298,000,000
GBP
|
298,000,000
GBP
|
— | — | — | — | — |
1,408,000,000
GBP
|
— | — | — |
1,408,000,000
GBP
|
— |
1,408,000,000
GBP
|
— |
| Other comprehensive income |
136,000,000
GBP
|
390,000,000
GBP
|
493,000,000
GBP
|
40,000,000
GBP
|
6,000,000
GBP
|
396,000,000
GBP
|
103,000,000
GBP
|
176,000,000
GBP
|
367,000,000
GBP
|
288,000,000
GBP
|
367,000,000
GBP
|
—
GBP
|
134,000,000
GBP
|
294,000,000
GBP
|
422,000,000
GBP
|
661,000,000
GBP
|
382,000,000
GBP
|
367,000,000
GBP
|
2,000,000
GBP
|
943,000,000
GBP
|
1,408,000,000
GBP
|
1,881,000,000
GBP
|
384,000,000
GBP
|
665,000,000
GBP
|
| Comprehensive income |
136,000,000
GBP
|
863,000,000
GBP
|
493,000,000
GBP
|
1,213,000,000
GBP
|
24,000,000
GBP
|
887,000,000
GBP
|
103,000,000
GBP
|
176,000,000
GBP
|
2,092,000,000
GBP
|
288,000,000
GBP
|
2,070,000,000
GBP
|
22,000,000
GBP
|
1,569,000,000
GBP
|
294,000,000
GBP
|
422,000,000
GBP
|
661,000,000
GBP
|
935,000,000
GBP
|
196,000,000
GBP
|
12,000,000
GBP
|
943,000,000
GBP
|
1,408,000,000
GBP
|
1,881,000,000
GBP
|
947,000,000
GBP
|
665,000,000
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — |
863,000,000
GBP
|
— | — |
2,070,000,000
GBP
|
— | — | — | — | — | — | — |
947,000,000
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — |
24,000,000
GBP
|
— | — |
22,000,000
GBP
|
— | — | — | — | — | — | — |
12,000,000
GBP
|
— | — | — | — | — | — | — |