Earnings Per Share Attributable to Cardinal Health, Inc. (Tables)

6 Months Ended

Dec. 31, 2018

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 December 31,
(in millions)	2018	2017
Weighted-average common shares–basic	299	315
Effect of dilutive securities:
Employee stock options, restricted share units and performance share units	1	1
Weighted-average common shares–diluted	300	316

	Six Months Ended December 31,
(in millions)	2018	2017
Weighted-average common shares–basic	302	315
Effect of dilutive securities:
Employee stock options, restricted share units and performance share units	1	2
Weighted-average common shares–diluted	303	317