Earnings Per Common Share

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings Per Common Share

The effect of dilutive securities on the weighted average common shares outstanding included in the calculation of earnings per diluted common share for the three and six months ended June 30, 2019 and 2018 were as follows:

	Three Months Ended June 30				Six Months Ended June 30
(number of shares in millions)	2019		2018		2019		2018
Weighted average common shares outstanding	236.9		244.9		236.8		247.4
Effect of dilutive securities:
Stock options	0.7		0.8		0.7		0.8
Other stock compensation plans	0.7		0.7		0.6		0.7
Potentially dilutive common shares	1.4		1.5		1.3		1.5
Adjusted weighted average common shares outstanding	238.3		246.4		238.1		248.9
Dividends per common share		$0.48		$0.45		$0.96		$0.90

Excluded from the computation of earnings per diluted share due to their antidilutive effect were 1.0 million outstanding stock options for the three and six months ended June 30, 2019, and 1.1 million outstanding stock options for the three and six months ended June 30, 2018.