Statement Of Cash Flows [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| 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
|