Statement Of Cash Flows [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) investing activities [abstract] | ||
| Dividends received from investments accounted for using equity method, classified as investing activities |
20,000,000
GBP
|
22,000,000
GBP
|
| Proceeds from sales of investments accounted for using equity method |
–
GBP
|
10,000,000
GBP
|
| Purchase of financial instruments, classified as investing activities |
24,000,000
GBP
|
19,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
113,000,000
GBP
|
99,000,000
GBP
|
| Dividends paid to non-controlling interests, classified as financing activities |
2,000,000
GBP
|
2,000,000
GBP
|
| Proceeds from issue of bonds, notes and debentures |
–
GBP
|
249,000,000
GBP
|
| Repayments of bonds, notes and debentures |
37,000,000
GBP
|
210,000,000
GBP
|
| Payments for debt issue costs |
1,000,000
GBP
|
2,000,000
GBP
|