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Earnings Per Common Share
 3 Months Ended
Jun. 30, 2016
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 June 30,
(In millions, except per share amounts)
2016
 
2015
Income from continuing operations
$
673

 
$
599

Net income attributable to noncontrolling interests
(18
)
 
(13
)
Income from continuing operations attributable to McKesson
655

 
586

Loss from discontinued operations, net of tax
(113
)
 
(10
)
Net income attributable to McKesson
$
542

 
$
576

 
 
 
 
Weighted average common shares outstanding:
 
 
 
Basic
225

 
232

Effect of dilutive securities:
 
 
 
Options to purchase common stock
1

 
1

Restricted stock units
2

 
2

Diluted
228

 
235

 
 
 
 
Earnings (loss) per common share attributable to McKesson: (1)
 
 
 
Diluted
 
 
 
Continuing operations
$
2.88

 
$
2.50

Discontinued operations
(0.50
)
 
(0.05
)
Total
$
2.38

 
$
2.45

Basic
 
 
 
Continuing operations
$
2.91

 
$
2.53

Discontinued operations
(0.50
)
 
(0.04
)
Total
$
2.41

 
$
2.49


(1)
Certain computations may reflect rounding adjustments.
Potentially dilutive securities include outstanding stock options, restricted stock units, and performance-based and other restricted stock units. Approximately 2 million and 1 million potentially dilutive securities were excluded from the computations of diluted net earnings per common share for each of the quarters ended June 30, 2016 and 2015, as they were anti-dilutive.