Earnings per ordinary share

12 Months Ended

Dec. 31, 2024

Disclosure [Abstract]

Earnings per ordinary share

10. Earnings per ordinary share

Basic earnings per ordinary share	2024			2023			2022
Profit available for equity holders ($m)		628			750			375
Basic weighted average number of ordinary shares (millions)		161.2			169.0			181.0
Basic earnings per ordinary share (cents)		389.6			443.8			207.2
Diluted earnings per ordinary share
Profit available for equity holders ($m)		628			750			375
Diluted weighted average number of ordinary shares (millions)		163.0			170.0			182.0
Diluted earnings per ordinary share (cents)		385.3			441.2			206.0
Basic and diluted share denominators are calculated as follows:
	2024 millions			2023 millions			2022 millions
Weighted average number of ordinary shares in issue		168.6			177.0			187.0
Weighted average number of treasury sharesa		(7.4	)		(8.0	)		(6.0	)
Basic weighted average number of ordinary shares		161.2			169.0			181.0
Dilutive potential ordinary shares		1.8			1.0			1.0
Diluted weighted average number of ordinary shares		163.0			170.0			182.0

a. Includes other shares that do not receive dividends.