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Earnings Per Common Share
 6 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Earnings Per Common Share
Earnings Per Common Share
Basic earnings per common share are computed by dividing net income by the weighted average number of common shares outstanding during the reporting period. Diluted earnings per common share are computed similar to basic earnings per common share except that it reflects the potential dilution that could occur if dilutive securities or other obligations to issue common stock were exercised or converted into common stock.
The computations for basic and diluted earnings per common share are as follows:
  
Quarter Ended September 30,
 
Six Months Ended September 30,
(In millions, except per share amounts)
2013
 
2012
 
2013
 
2012
Income from continuing operations
$
416

 
$
399

 
$
836

 
$
778

Income (loss) from discontinued operations, net of tax
(12
)
 
2

 
(8
)
 
3

Net income
$
404

 
$
401

 
$
828

 
$
781

 
 
 
 
 
 
 
 
Weighted average common shares outstanding:
 
 
 
 
 
 
 
Basic
229

 
236

 
228

 
236

Effect of dilutive securities:
 
 
 
 
 
 
 
Options to purchase common stock
2

 
1

 
1

 
1

Restricted stock units
2

 
3

 
3

 
3

Diluted
233

 
240

 
232

 
240

 
 
 
 
 
 
 
 
Earnings (loss) per common share: (1)
 
 
 
 
 
 
 
Diluted
 
 
 
 
 
 
 
Continuing operations
$
1.79

 
$
1.66

 
$
3.60

 
$
3.24

Discontinued operations
(0.05
)
 
0.01

 
(0.04
)
 
0.01

Total
$
1.74

 
$
1.67

 
$
3.56

 
$
3.25

Basic
 
 
 
 
 
 
 
Continuing operations
$
1.82

 
$
1.69

 
$
3.67

 
$
3.30

Discontinued operations
(0.06
)
 
0.01

 
(0.04
)
 
0.01

Total
$
1.76

 
$
1.70

 
$
3.63

 
$
3.31

(1)
Certain computations may reflect rounding adjustments.
Potentially dilutive securities include outstanding stock options, restricted stock units and performance-based restricted stock units. Approximately 1 million and 2 million potentially dilutive securities were excluded from the computations of diluted net earnings per common share for the quarters ended September 30, 2013 and 2012 and 3 million and 5 million potentially dilutive securities were excluded from the computations of diluted net earnings per common share for the six months ended September 30, 2013 and 2012, as they were anti-dilutive.