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Earnings (Loss) Per Common Share
6 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Earnings (Loss) Per Common Share Earnings (Loss) Per Common Share
Basic earnings (loss) per common share are computed by dividing net income by the weighted-average number of common shares outstanding during the reporting period. The computation of diluted earnings (loss) per common share is similar to that of basic earnings (loss) per common share, except that the former reflects the potential dilution that could occur if dilutive securities or other obligations to issue common stock were exercised or converted into common stock.
Potentially dilutive securities include outstanding stock options, restricted stock units, and performance-based and other restricted stock units. Less than 1 million of potentially dilutive securities for the three and six months ended September 30, 2021 and approximately 2 million of potentially dilutive securities for the three and six months ended September 30, 2020 were excluded from the computation of diluted earnings per common share as they were anti-dilutive.
The computations for basic and diluted earnings or loss per common share are as follows:
Three Months Ended September 30, Six Months Ended September 30,
(In millions, except per share amounts)2021202020212020
Income from continuing operations$310 $627 $846 $1,122 
Net income attributable to noncontrolling interests(43)(50)(90)(100)
Income from continuing operations attributable to McKesson Corporation267 577 756 1,022 
Loss from discontinued operations, net of tax— — (3)(1)
Net income attributable to McKesson Corporation$267 $577 $753 $1,021 
Weighted-average common shares outstanding:
Basic154.1 162.0 155.1 162.0 
Effect of dilutive securities:
Stock options0.2 — 0.2 — 
Restricted stock units (1)
1.5 1.2 1.6 1.2 
Diluted155.8 163.2 156.9 163.2 
Earnings (loss) per common share attributable to McKesson: (2)
Diluted
Continuing operations$1.71 $3.54 $4.82 $6.26 
Discontinued operations— — (0.02)— 
Total
$1.71 $3.54 $4.80 $6.26 
Basic
Continuing operations$1.73 $3.56 $4.87 $6.31 
Discontinued operations— — (0.02)(0.01)
Total
$1.73 $3.56 $4.85 $6.30 
(1)Includes dilutive effect from restricted stock units, performance-based restricted stock units, and performance-based stock units.
(2)Certain computations may reflect rounding adjustments.