v3.26.1
Earnings Per Share Attributable to Cardinal Health, Inc. (Reconciliation of Common Shares Used to Compute Basic and Diluted EPS) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Earnings Per Share [Abstract]      
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest $ 1,705 $ 1,569 $ 853
Net earnings attributable to noncontrolling interest 9 (8) (1)
Net Income (Loss) $ 1,714 $ 1,561 $ 852
Weighted-average common shares–basic (in shares) 236 241 245
Effect of dilutive securities:      
Employee stock options, restricted share units, and performance share units (in shares) 1 1 2
Weighted-average common shares–diluted (in shares) 237 242 247
Diluted earnings per common share attributable to Cardinal Health, Inc.:      
Basic (in dollars per share) $ 7.27 $ 6.48 $ 3.48
Diluted (in dollars per share) $ 7.23 $ 6.45 $ 3.45