Earnings Per Share Attributable to Cardinal Health, Inc. (Narrative) (Details) - shares shares in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
Earnings Per Share [Abstract] | ||||
Potentially dilutive employee stock options, restricted share units and performance share units that were antidilutive (in shares) | 3 | 5 | 5 | 4 |
Shares that would be antidilutive as a result of net loss | 2 | 2 |