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Earnings Per Share (Tables)
9 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
Numerator and denominator used to compute basic and diluted earnings per share
The following table sets forth the numerators and denominators used in the computation of basic and diluted earnings per share. Options to purchase 4.0 million and 9.6 million shares of common stock were excluded from the computation of diluted earnings per share for the fiscal 2012 and fiscal 2011 periods, respectively, because the exercise price was greater than the average market price of the common shares and, therefore, their effect would have been antidilutive. Additionally, the convertible senior notes were excluded from the computation of diluted earnings per share for 2011 periods because their effect would have been antidilutive.
 
 
Three Months Ended
June 30,
 
Nine Months Ended
June 30,
 
 
2012
 
2011
 
2012
 
2011
 
 
(In millions)
Numerator:
 
 
 
 
 
 
 
 
Net income
 
$
787.8

 
$
28.7

 
$
856.2

 
$
36.0

Effect of dilutive securities:
 
 
 
 
 
 
 
 
Interest expense and amortization of issuance costs associated with convertible senior notes
 
9.5

 

 
27.1

 

Numerator for diluted earnings per share after assumed conversions
 
$
797.3

 
$
28.7

 
$
883.3

 
$
36.0

Denominator:
 
 
 
 
 
 
 
 
Denominator for basic earnings per share— weighted average common shares
 
318.8

 
318.7

 
317.6

 
319.0

Effect of dilutive securities:
 
 
 
 
 
 
 
 
Employee stock awards
 
2.9

 
0.3

 
1.8

 
0.3

Convertible senior notes
 
38.3

 

 
38.3

 

Denominator for diluted earnings per share— adjusted weighted average common shares
 
360.0

 
319.0

 
357.7

 
319.3