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Earnings Per Share Attributable to Cardinal Health, Inc. (Narrative) (Details) - shares shares in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Potentially dilutive employee stock options, restricted share units and performance share units that were antidilutive (in shares)	5,000	3,000	6,000
shares that would be antidilutive as a result of net loss	1,000		2,000

X

- Definition

shares that would be antidilutive as a result of net loss

+ References

No definition available.

+ Details

Name:	cah_Sharesthatwouldbeantidilutiveasaresultofnetloss
Namespace Prefix:	cah_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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