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Earnings Per Share Attributable to Cardinal Health, Inc.
 3 Months Ended
Sep. 30, 2020
Earnings Per Share [Abstract]  
Earnings Per Share Attributable to Cardinal Health, Inc.
10. Loss Per Share Attributable to Cardinal Health, Inc.
The following table reconciles the number of common shares used to compute basic and diluted loss per share attributable to Cardinal Health, Inc.:
Three Months Ended September 30,
(in millions)20202019
Weighted-average common shares–basic293 296 
Effect of dilutive securities:
Employee stock options, restricted share units, and performance share units— — 
Weighted-average common shares–diluted293 296 
The potentially dilutive employee stock options, restricted share units and performance share units that were anti-dilutive for September 30, 2020 and 2019 were 7 million and 6 million, respectively. For the three months ended September 30, 2020, and 2019, there were 2 million and 1 million potentially dilutive employee stock options, restricted share units and performance share units, respectively, not included in the computation of diluted loss per common share attributable to Cardinal Health, Inc. because their effect would have been anti-dilutive as a result of the net loss during that period.