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 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
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 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||||||||||
| Profit (loss) |
–
GBP
|
1, 9 56
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
2 , 0 41
GBP
|
1, 9 5 6
GBP
|
85,000,000
GBP
|
2 , 0 41
GBP
|
— |
1, 9 4 0
GBP
|
— |
1, 8 5 7
GBP
|
–
GBP
|
83,000,000
GBP
|
1, 8 5 7
GBP
|
–
GBP
|
–
GBP
|
1, 9 4 0
GBP
|
–
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||||||||||
| Adjustments for income tax expense | — | — | — | — | — | — | — | — |
2 91
GBP
|
— |
386,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Adjustments for decrease (increase) in inventories | — | — | — | — | — | — | — | — |
14 4
GBP
|
— |
2 2 3
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Adjustments for provisions | — | — | — | — | — | — | — | — |
24,000,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Adjustments for share-based payments | — | — | — | — | — | — | — | — |
14 4
GBP
|
— |
11 0
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — | — | — | — | — |
17 5
GBP
|
— |
3 95
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — | — |
3, 925
GBP
|
— |
3, 76 0
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||||||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — | — | — | — | — | — | — | — |
19 4
GBP
|
— |
8,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — | — | — | — | — | — | — |
4 ,7 76
GBP
|
— |
14,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — | — | — | — | — | — |
17 3
GBP
|
— |
13 1
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Dividends received, classified as investing activities | — | — | — | — | — | — | — | — |
15 8
GBP
|
— |
13 4
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Interest received, classified as investing activities | — | — | — | — | — | — | — | — |
13 0
GBP
|
— |
12 6
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — | — |
5, 26 9
GBP
|
— |
5 4 1
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||||||||||||
| Payments to acquire or redeem entity's shares | — | — | — | — | — | — | — | — |
555,000,000
GBP
|
— |
5 6 1
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Proceeds from borrowings, classified as financing activities | — | — | — | — | — | — | — | — |
3 ,1 8 0
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Repayments of borrowings, classified as financing activities | — | — | — | — | — | — | — | — |
3 ,1 6 8
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Payments of lease liabilities, classified as financing activities | — | — | — | — | — | — | — | — |
19 0
GBP
|
— |
2 92
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Interest paid, classified as financing activities | — | — | — | — | — | — | — | — |
543,000,000
GBP
|
— |
356,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — | — |
695,000,000
GBP
|
— |
2 ,1 8 8
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — | — | — | — | — | — |
6 49
GBP
|
— |
1, 0 31
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — | — | — | — | — |
4 0
GBP
|
— |
7 1
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — | — | — |
3, 378
GBP
|
— |
4, 067
GBP
|
— | — | — | — | — | — | — | — |
3 ,1 0 7
GBP
|