Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2023

Earnings Per Share [Abstract]

Average Common Shares Outstanding Basic and Diluted

The average number of common shares outstanding is reconciled to those used in the basic and diluted EPS computations as follows:

	Three Months Ended June 30		Six Months Ended June 30
(Millions of shares)	2023	2022	2023	2022
Basic	338.0	337.4	337.7	337.2
Dilutive effect of stock options and restricted share unit awards	0.9	0.9	1.0	1.1
Diluted	338.9	338.3	338.7	338.3