Analysis Of Income And Expense [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 |
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 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||
| Revenue | — | — |
9,263,000,000
GBP
|
— | — | — | — | — | — | — | — |
9,382,000,000
GBP
|
— | — | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||||
| Gains (losses) on disposals of non-current assets [abstract] | ||||||||||||||||||
| Gains (losses) on disposals of non-current assets | — | — |
5,000,000
GBP
|
— | — | — | — | — | — | — | — |
—
GBP
|
— | — | — | — | — | — |
| Finance income (cost) | — | — |
150,000,000
GBP
|
— | — | — | — | — | — | — | — |
193,000,000
GBP
|
— | — | — | — | — | — |
| Operating expense | — | — |
1,044,000,000
GBP
|
— | — | — | — | — | — | — | — |
1,090,000,000
GBP
|
— | — | — | — | — | — |
| Expenses by nature [abstract] | ||||||||||||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||||||||
| Impairment loss (reversal of impairment loss) recognised in profit or loss | — | — |
19,000,000
GBP
|
— | — | — | — | — | — | — | — |
—
GBP
|
— | — | — | — | — | — |
| Miscellaneous other comprehensive income [abstract] | ||||||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations | — | — |
245,000,000
GBP
|
— | — | — | — | — | — | — | — |
133,000,000
GBP
|
— | — | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — |
2,000,000
GBP
|
— | — | — | — | — | — | — | — |
1,000,000
GBP
|
— | — | — | — | — | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||||
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — |
—
GBP
|
— | — | — | — | — | — | — | — |
—
GBP
|
— | — | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income from continuing operations | — | — |
17,000,000
GBP
|
— | — | — | — | — | — | — | — |
85,000,000
GBP
|
— | — | — | — | — | — |
| Comprehensive income from discontinued operations | — | — |
150,000,000
GBP
|
— | — | — | — | — | — | — | — |
35,000,000
GBP
|
— | — | — | — | — | — |
| Comprehensive income |
13,000,000
GBP
|
—
GBP
|
146,000,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
241,000,000
GBP
|
374,000,000
GBP
|
133,000,000
GBP
|
—
GBP
|
—
GBP
|
130,000,000
GBP
|
10,000,000
GBP
|
—
GBP
|
250,000,000
GBP
|
—
GBP
|
120,000,000
GBP
|
130,000,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
133,000,000
GBP
|
— | — | — | — | — | — | — | — |
120,000,000
GBP
|
— | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — |
13,000,000
GBP
|
— | — | — | — | — | — | — | — |
10,000,000
GBP
|
— | — | — | — | — | — |