Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Denominator for Basic and Diluted Earnings Per Share

The denominator for basic and diluted earnings per share for the three and nine months ended September 30, 2018 and 2017 is as follows:

	Three Months Ended   September 30		Nine Months Ended   September 30
	2018	2017	2018	2017
Denominator for basic earnings per share – weighted-average shares	259.5	260.5	258.0	263.2
Effect of dilutive securities – employee stock options, nonvested restricted stock awards, convertible debentures and equity units	5.9	6.5	6.3	6.2
Denominator for diluted earnings per share	265.4	267.0	264.3	269.4