Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 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 months ended March 31, 2017 and 2016 is as follows:

	Three Months Ended   March 31
	2017	2016
Denominator for basic earnings per share – weighted-average shares	264.4	261.8
Effect of dilutive securities – employee stock options, nonvested restricted stock awards and convertible debentures	6.0	5.7
Denominator for diluted earnings per share	270.4	267.5