Financial instruments - Fair value hedges - Additional information (Details) - 1 months ended Dec. 31, 2023 - $200m bond maturing 2027 £ in Millions, $ in Millions |
USD ($) |
GBP (£) |
|---|---|---|
| Disclosure of detailed information about financial instruments | ||
| Repayment of bonds | $ | $ 200 | |
| Fair value adjustment on redeemed bonds, expensed to income statement | £ 16 | |
| Cash outflow on derivatives related to redeemed bonds | £ 16 |