Weighted average shares outstanding:


Notes to Financial Statements

NOTE 2 — EARNINGS PER SHARE

Basic earnings per share (“EPS”) is computed based on the weighted average number of shares of common stock outstanding during the period. Diluted EPS is computed based on the weighted average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares include outstanding stock options, stock awards, and shared performance stock awards. The components of basic and diluted EPS are as follows:

 

(In millions, except earnings per share)                   


Year Ended June 30,    2011     2010     2009  

Net income available for common shareholders (A)

   $   23,150      $   18,760      $   14,569   

Weighted average outstanding shares of common stock (B)

     8,490        8,813        8,945   

Dilutive effect of stock-based awards

     103        114        51   


 


 


Common stock and common stock equivalents (C)

     8,593        8,927        8,996   
    


 


 


Earnings Per Share                   

Basic (A/B)

   $ 2.73      $ 2.13      $ 1.63   

Diluted (A/C)

   $ 2.69      $ 2.10      $ 1.62   

We excluded the following shares underlying stock-based awards from the calculations of diluted EPS because their inclusion would have been anti-dilutive:

 

(In millions)                     


Year Ended June 30,    2011      2010      2009  

Shares excluded from calculations of diluted EPS

     21         28         342   

The decrease in anti-dilutive shares from fiscal year 2009 to 2010 was due mainly to the decrease in employee stock options outstanding.

In June 2010, we issued $1.25 billion of zero-coupon debt securities that are convertible into shares of our common stock if certain conditions are met. As of June 30, 2011, none of these securities had met price or other conditions that would make them eligible for issuance and therefore were excluded from the calculation of either the basic or diluted EPS. See Note 12 – Debt for additional information.