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Earnings Per Share Attributable to Cardinal Health, Inc. (Tables)
 3 Months Ended
Sep. 30, 2022
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)20222021
Weighted-average common shares–basic271 287 
Effect of dilutive securities:
Employee stock options, restricted share units, and performance share units2 2 
Weighted-average common shares–diluted273 289