Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2023

Earnings Per Share

Computing Basic and Diluted Earnings Per Share

Basic and diluted earnings per share were computed using the following common share data for the year ended December 31 (shares in millions):

	2023	2022	2021
Number of common shares outstanding at end of period	401.5	407.9	416.1
Effect of using weighted average common shares outstanding	3.4	4.9	4.3
Weighted average basic common shares outstanding	404.9	412.8	420.4
Dilutive effect of equity-based compensation awards and other contingently issuable shares	2.0	2.2	2.5
Weighted average diluted common shares outstanding	406.9	415.0	422.9
Potentially issuable shares	5.0	5.2	5.7
Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding	1.0	1.1	0.6