Investments in securities (Tables)

12 Months Ended

Dec. 31, 2024

Fair Value Measurement [Abstract]

Schedule of Investments in Securities


			$ million
			Dec 31, 2024			Dec 31, 2023
Equity securities:			1,104			1,605
Equity securities at fair value through other comprehensive income			1,104			1,605

Debt securities:			1,151			1,641
Debt securities at amortised cost			37			28
Debt securities at fair value through other comprehensive income			1,017			1,285
Debt securities at fair value through profit or loss			97			328
Total			2,255			3,246
At fair value
Measured by reference to prices in active markets for identical assets			1,197			1,983
Measured by reference to other observable inputs			95			92
Measured using predominantly unobservable inputs			926			1,143
Total			2,218			3,218
At cost			37			28
Total			2,255			3,246

Schedule of Investments in Securities Using Predominantly Unobservable Inputs


			$ million
			2024			2023
At January 1			1,143			1,299
Losses recognised in other comprehensive income			(16)			(126)
Purchases			63			146
Sales			(260)			(207)
Other movements			(4)			31
At December 31			926			1,143

[A]Based on expected dividend flows, adjusted for country and other risks as appropriate and discounted to their present value.