Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Denominator for Basic and Diluted Earnings Per Share

The denominator for basic and diluted earnings per share for the three months ended March 31, 2020 and 2019 is as follows:

	Three Months Ended   March 31
	2020	2019
Denominator for basic earnings per share – weighted-average shares	252.4	257.1
Effect of dilutive securities – employee stock options, nonvested restricted stock awards and convertible debentures	4.0	5.2
Denominator for diluted earnings per share	256.4	262.3