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 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Interest paid, classified as operating activities |
180,000,000
GBP
|
— |
191,000,000
GBP
|
— |
52,000,000
GBP
|
| Interest received, classified as operating activities |
36,000,000
GBP
|
— |
25,000,000
GBP
|
— |
13,000,000
GBP
|
| Income taxes paid (refund), classified as operating activities |
87,000,000
GBP
|
— |
100,000,000
GBP
|
— |
77,000,000
GBP
|
| Cash flows from (used in) operating activities |
678,000,000
GBP
|
— |
737,000,000
GBP
|
— |
600,000,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities |
–
GBP
|
— |
–
GBP
|
— |
1,000,000
GBP
|
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities |
172,000,000
GBP
|
— |
242,000,000
GBP
|
— |
1,018,000,000
GBP
|
| Proceeds from sales of property, plant and equipment, classified as investing activities |
4,000,000
GBP
|
— |
14,000,000
GBP
|
— |
5,000,000
GBP
|
| Purchase of property, plant and equipment, classified as investing activities |
171,000,000
GBP
|
— |
167,000,000
GBP
|
— |
153,000,000
GBP
|
| Purchase of intangible assets, classified as investing activities |
44,000,000
GBP
|
— |
44,000,000
GBP
|
— |
37,000,000
GBP
|
| Cash flows from (used in) investing activities |
373,000,000
GBP
|
— |
416,000,000
GBP
|
— |
1,197,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from borrowings, classified as financing activities |
–
GBP
|
— |
–
GBP
|
— |
2,383,000,000
GBP
|
| Repayments of borrowings, classified as financing activities |
369,000,000
GBP
|
— |
–
GBP
|
— |
844,000,000
GBP
|
| Payments of lease liabilities, classified as financing activities |
145,000,000
GBP
|
— |
157,000,000
GBP
|
— |
104,000,000
GBP
|
| Dividends paid, classified as financing activities |
229,000,000
GBP
|
— |
201,000,000
GBP
|
— |
122,000,000
GBP
|
| Cash flows from (used in) financing activities |
752,000,000
GBP
|
— |
361,000,000
GBP
|
— |
1,323,000,000
GBP
|
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
447,000,000
GBP
|
— |
40,000,000
GBP
|
— |
726,000,000
GBP
|
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents |
13,000,000
GBP
|
— |
7,000,000
GBP
|
— |
89,000,000
GBP
|
| Cash and cash equivalents | — |
925,000,000
GBP
|
— |
1,562,000,000
GBP
|
— |