Earnings Per Share (Tables)

3 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Reconciliation of Common Shares Used to Compute Basic and Diluted Earnings Per Share

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 September 30
(in millions)	2015	2014
Weighted-average common shares–basic	328	336
Effect of dilutive securities:
Employee stock options, restricted share units, and performance share units	3	4
Weighted-average common shares–diluted	331	340