Earnings per ordinary share

12 Months Ended

Dec. 31, 2023

Text Block [Abstract]

Earnings per ordinary share

10. Earnings per ordinary share

Basic earnings per ordinary share	2023		2022		2021
Profit available for equity holders ($m)		750		375		266
Basic weighted average number of ordinary shares (millions)		169		181		183
Basic earnings per ordinary share (cents)		443.8		207.2		145.4
Diluted earnings per ordinary share
Profit available for equity holders ($m)		750		375		266
Diluted weighted average number of ordinary shares (millions)		170		182		184
Diluted earnings per ordinary share (cents)		441.2		206.0		144.6

Basic and diluted share denominators are calculated as follows:

	2023 millions			2022    millions			2021    millions
Weighted average number of ordinary shares in issue		177			187			187
Weighted average number of treasury shares		(8	)		(6	)		(4	)
Basic weighted average number of ordinary shares		169			181			183
Dilutive potential ordinary shares		1			1			1
Diluted weighted average number of ordinary shares		170			182			184