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Earnings Per Common Share (Tables)
9 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Schedule of computations for basic and diluted earnings per common share
The computations for basic and diluted earnings per common share are as follows:
  
Quarter Ended December 31,
 
Nine Months Ended December 31,
(In millions, except per share amounts)
2018
 
2017
 
2018
 
2017
Income from continuing operations
$
527

 
$
960

 
$
998

 
$
1,379

Net income attributable to noncontrolling interests
(57
)
 
(58
)
 
(169
)
 
(169
)
Income from continuing operations attributable to McKesson
470

 
902

 
829

 
1,210

(Loss) Income from discontinued operations, net of tax
(1
)
 
1

 
1

 
3

Net income attributable to McKesson
$
469

 
$
903

 
$
830

 
$
1,213

 
 
 
 
 
 
 
 
Weighted average common shares outstanding:
 
 
 
 
 
 
 
Basic
194

 
207

 
198

 
209

Effect of dilutive securities:
 
 
 
 
 
 
 
Restricted stock units
1

 
1

 
1

 
1

Diluted
195

 
208

 
199

 
210

 
 
 
 
 
 
 
 
Earnings per common share attributable to McKesson: (1)
 
 
 
 
 
 
 
Diluted
 
 
 
 
 
 
 
Continuing operations
$
2.41

 
$
4.32

 
$
4.17

 
$
5.75

Discontinued operations
(0.01
)
 
0.01

 
0.01

 
0.01

Total
$
2.40

 
$
4.33

 
$
4.18

 
$
5.76

Basic
 
 
 
 
 
 
 
Continuing operations
$
2.42

 
$
4.34

 
$
4.19

 
$
5.78

Discontinued operations
(0.01
)
 
0.01

 

 
0.02

Total
$
2.41

 
$
4.35

 
$
4.19

 
$
5.80


(1)
Certain computations may reflect rounding adjustments.