Statement Of Cash Flows [Abstract]
| Concept |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||
| Cash flows from (used in) operating activities [abstract] | ||||
| Income taxes paid (refund), classified as operating activities |
92,000,000
GBP
|
— | — |
75,000,000
GBP
|
| Cash flows from (used in) operating activities |
592,000,000
GBP
|
— | — |
291,000,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities |
41,000,000
GBP
|
— | — |
187,000,000
GBP
|
| Other cash receipts from sales of interests in joint ventures, classified as investing activities |
–
GBP
|
— | — |
2,000,000
GBP
|
| Purchase of property, plant and equipment, classified as investing activities |
301,000,000
GBP
|
— | — |
253,000,000
GBP
|
| Purchase of intangible assets, classified as investing activities |
67,000,000
GBP
|
— | — |
63,000,000
GBP
|
| Proceeds from sales of other long-term assets, classified as investing activities |
5,000,000
GBP
|
— | — |
8,000,000
GBP
|
| Proceeds from government grants, classified as investing activities |
5,000,000
GBP
|
— | — |
7,000,000
GBP
|
| Interest received, classified as investing activities |
62,000,000
GBP
|
— | — |
28,000,000
GBP
|
| Cash flows from (used in) investing activities |
255,000,000
GBP
|
— | — |
101,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||||
| Payments to acquire or redeem entity's shares |
–
GBP
|
— | — |
45,000,000
GBP
|
| Proceeds from borrowings, classified as financing activities |
1,000,000
GBP
|
— | — |
672,000,000
GBP
|
| Repayments of borrowings, classified as financing activities |
151,000,000
GBP
|
— | — |
281,000,000
GBP
|
| Payments of lease liabilities, classified as financing activities |
11,000,000
GBP
|
— | — |
14,000,000
GBP
|
| Interest paid, classified as financing activities |
137,000,000
GBP
|
— | — |
94,000,000
GBP
|
| Cash flows from (used in) financing activities |
439,000,000
GBP
|
— | — |
97,000,000
GBP
|
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
102,000,000
GBP
|
— | — |
287,000,000
GBP
|
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||
| Effect of exchange rate changes on cash and cash equivalents |
5,000,000
GBP
|
— | — |
4,000,000
GBP
|
| Cash and cash equivalents | — |
542,000,000
GBP
|
650,000,000
GBP
|
— |