Earnings per Share

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Earnings per Share

EARNINGS PER SHARE

Basic earnings per share are based upon the weighted-average number of shares of common stock outstanding. Diluted earnings per share are based upon the weighted-average number of shares of common stock outstanding, plus all potentially dilutive securities that were assumed to be converted into common shares at the beginning of the period under the treasury stock method. Our potentially dilutive securities consist of stock options, SSARs, restricted stock or units and performance share awards.

	Quarter Ended		Six Months Ended
	June 30,		June 30,
	2019	2018	2019	2018
Denominator for basic earnings per share:
Weighted average common shares outstanding - basic	123.4	144.6	126.9	144.7
Effect of dilutive securities:
Dilutive effect of employee stock plans	0.9	1.6	1.0	1.7
Denominator for diluted earnings per share:
Weighted average shares outstanding - diluted	124.3	146.2	127.9	146.4

For the quarter and six months ended June 30, 2019 and 2018, there were no SSARs that were considered not in-the-money for purposes of our earnings per share calculation.