Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

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, 2017 and 2016 is as follows:

	Three Months Ended   September 30		Nine Months Ended   September 30
	2017	2016	2017	2016
Denominator for basic earnings per share – weighted-average shares	260.5	263.2	263.2	262.7
Effect of dilutive securities – employee stock options, nonvested restricted stock awards and convertible debentures	6.5	4.9	6.2	5.2
Denominator for diluted earnings per share	267.0	268.1	269.4	267.9