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Earnings Per Share | 6 Months Ended
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Dec. 31, 2014
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share Attributable to Cardinal Health, Inc. The following tables reconcile 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) | 2015 |  | 2014
Weighted-average common shares–basic | 329 |  |  | 331 |
Effect of dilutive securities: |  |  |
Employee stock options, restricted share units, and performance share units | 3 |  |  | 3 |
Weighted-average common shares–diluted | 332 |  |  | 334 |
| Six Months Ended December 31
(in millions) | 2015 |  | 2014
Weighted-average common shares–basic | 329 |  |  | 333 |
Effect of dilutive securities: |  |  |
Employee stock options, restricted share units, and performance share units | 3 |  |  | 4 |
Weighted-average common shares–diluted | 332 |  |  | 337 |
The potentially dilutive employee stock options, restricted share units, and performance share units that were antidilutive were 2 million and 1 million for the three months ended December 31, 2015 and 2014, respectively, and 2 million and 1 million for the six months ended December 31, 2015 and 2014, respectively.

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