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Earnings Per Share Attributable to Cardinal Health, Inc. | 6 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Earnings Per Share Attributable to Cardinal Health, Inc. | 12. Earnings Per Share Attributable to Cardinal Health, Inc. The following table reconciles the number of common shares used to compute basic and diluted earnings per share attributable to Cardinal Health, Inc.:
| Three Months Ended December 31,
(in millions) | 2016 |  | 2015
Weighted-average common shares–basic | 318 |  |  | 329 |
Effect of dilutive securities: |  |  |
Employee stock options, restricted share units, and performance share units | 1 |  |  | 3 |
Weighted-average common shares–diluted | 319 |  |  | 332 |
| Six Months Ended December 31,
(in millions) | 2016 |  | 2015
Weighted-average common shares–basic | 319 |  |  | 329 |
Effect of dilutive securities: |  |  |
Employee stock options, restricted share units, and performance share units | 2 |  |  | 3 |
Weighted-average common shares–diluted | 321 |  |  | 332 |
The potentially dilutive employee stock options, restricted share units, and performance share units that were antidilutive were 4 million and 2 million for the three months ended December 31, 2016 and 2015, respectively, and 3 million and 2 million for the six months ended December 31, 2016 and 2015, respectively.

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