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Earnings Per Share Attributable to Cardinal Health, Inc. (Tables)
 12 Months Ended
Jun. 30, 2020
Earnings Per Share [Abstract]  
Reconciliation of Common Shares Used to Compute Basic and Diluted Earnings Per Share
The following table reconciles the computation of basic and diluted earnings per share attributable to Cardinal Health, Inc.:
(in millions, except per share amounts)
2020
 
2019
 
2018
Net earnings/(loss)
$
(3,693
)
 
$
1,365

 
$
259

Net earnings attributable to noncontrolling interest
(3
)
 
(2
)
 
(3
)
Net earnings/(loss) attributable to Cardinal Health, Inc.
$
(3,696
)
 
$
1,363

 
$
256

Weighted-average common shares–basic
293

 
300

 
313

Effect of dilutive securities:
 
 
 
 
 
Employee stock options, restricted share units, and performance share units
—

 
1

 
2

Weighted-average common shares–diluted
293

 
301

 
315

Basic earnings/(loss) per common share attributable to Cardinal Health, Inc.:
$
(12.61
)
 
$
4.55

 
$
0.82

Diluted earnings/(loss) per common share attributable to Cardinal Health, Inc.:
(12.61
)
 
4.53

 
0.81