Statement Of Cash Flows [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 |
As at 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 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 cash flows [abstract] | ||||||||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
5 42
GBP
|
–
GBP
|
–
GBP
|
542,000,000
GBP
|
87,000,000
GBP
|
629,000,000
GBP
|
— |
197,000,000
GBP
|
–
GBP
|
— |
11 0
GBP
|
–
GBP
|
87,000,000
GBP
|
11 0
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
7 75
GBP
|
–
GBP
|
68 3
GBP
|
92,000,000
GBP
|
683,000,000
GBP
|
–
GBP
|
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — |
1,408,000,000
GBP
|
— |
1,238,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
70 1
GBP
|
— | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — | — | — | — |
21,000,000
GBP
|
— |
5,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
13,000,000
GBP
|
— | — | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities | — | — | — | — | — | — | — |
1 8 9
GBP
|
— |
17 7
GBP
|
— | — | — | — | — | — | — | — | — | — |
20 9
GBP
|
— | — | — | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — | — | — | — | — |
47,000,000
GBP
|
— |
4 0
GBP
|
— | — | — | — | — | — | — | — | — | — |
15,000,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — |
278,000,000
GBP
|
— |
38 0
GBP
|
— | — | — | — | — | — | — | — | — | — |
4 09
GBP
|
— | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||||||||||||
| Proceeds from changes in ownership interests in subsidiaries that do not result in loss of control | — | — | — | — | — | — | — |
–
GBP
|
— |
46,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — |
| Payments from changes in ownership interests in subsidiaries that do not result in loss of control | — | — | — | — | — | — | — |
8 7
GBP
|
— |
16,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
8 4
GBP
|
— | — | — | — | — |
| Payments to acquire or redeem entity's shares | — | — | — | — | — | — | — |
82,000,000
GBP
|
— |
5 4
GBP
|
— | — | — | — | — | — | — | — | — | — |
86 2
GBP
|
— | — | — | — | — |
| Proceeds from borrowings, classified as financing activities | — | — | — | — | — | — | — |
1,060,000,000
GBP
|
— |
1 ,053
GBP
|
— | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — |
| Repayments of borrowings, classified as financing activities | — | — | — | — | — | — | — |
1,087,000,000
GBP
|
— |
1 ,1 0 2
GBP
|
— | — | — | — | — | — | — | — | — | — |
221,000,000
GBP
|
— | — | — | — | — |
| Payments of lease liabilities, classified as financing activities | — | — | — | — | — | — | — |
282,000,000
GBP
|
— |
2 59
GBP
|
— | — | — | — | — | — | — | — | — | — |
3 10
GBP
|
— | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — |
989,000,000
GBP
|
— |
9 04
GBP
|
— | — | — | — | — | — | — | — | — | — |
1,9 1 1
GBP
|
— | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — | — | — | — | — |
697,000,000
GBP
|
— |
4 6
GBP
|
— | — | — | — | — | — | — | — | — | — |
1, 61 9
GBP
|
— | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — | — | — | — |
90,000,000
GBP
|
— |
8 0
GBP
|
— | — | — | — | — | — | — | — | — | — |
64,000,000
GBP
|
— | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — | — |
2 ,638
GBP
|
— | — |
2,218,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |