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] | |||||
| Cash flows from (used in) operating activities |
121,000,000
GBP
|
— |
29,000,000
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities |
55,000,000
GBP
|
— |
320,000,000
GBP
|
— | — |
| Proceeds from sales of property, plant and equipment, classified as investing activities |
–
GBP
|
— |
4,000,000
GBP
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities |
108,000,000
GBP
|
— |
95,000,000
GBP
|
— | — |
| Cash receipts from repayment of advances and loans made to other parties, classified as investing activities |
–
GBP
|
— |
1,205,000,000
GBP
|
— | — |
| Interest received, classified as investing activities |
3,000,000
GBP
|
— |
2,000,000
GBP
|
— | — |
| Cash flows from (used in) investing activities |
68,000,000
GBP
|
— |
721,000,000
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from borrowings, classified as financing activities |
767,000,000
GBP
|
— |
628,000,000
GBP
|
— | — |
| Repayments of borrowings, classified as financing activities |
10,000,000
GBP
|
— |
1,371,000,000
GBP
|
— | — |
| Payments of lease liabilities, classified as financing activities |
32,000,000
GBP
|
— |
32,000,000
GBP
|
— | — |
| Cash flows from (used in) financing activities |
219,000,000
GBP
|
— |
966,000,000
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
30,000,000
GBP
|
— |
216,000,000
GBP
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents |
7,000,000
GBP
|
— |
19,000,000
GBP
|
— | — |
| Cash and cash equivalents | — |
88,000,000
GBP
|
— |
58,000,000
GBP
|
355,000,000
GBP
|