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Shares Used in Computing Net Income Per Share
3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Shares Used in Computing Net Income Per Share
Shares Used in Computing Net Income Per Share
The computation of shares used in calculating basic and diluted net income per common share is as follows:
 
 
Three Months Ended
March 31,
(In millions)
 
2016
 
2015
Weighted-average common shares outstanding used for the calculation of net income per share – basic
 
223.5

 
238.8

Common stock equivalents
 
3.8

 
4.2

Weighted-average common shares outstanding used for the calculation of net income per share – diluted
 
227.3

 
243.0


For the each of the three-month periods ended March 31, 2016 and 2015, stock options for 0.6 million shares were excluded from the calculation of diluted weighted-average outstanding shares because their impact was anti-dilutive.