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Earnings Per Share Attributable to Cardinal Health, Inc. (Narrative) (Details) shares in Millions, Reportable_Segments in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2023 shares | Mar. 31, 2022 Reportable_Segments shares | Mar. 31, 2023 shares | Mar. 31, 2022 Reportable_Segments shares
Earnings Per Share [Abstract] |  |  |  |
Potentially dilutive employee stock options, restricted share units and performance share units that were antidilutive (in shares) | shares | 2 | 5 | 2 | 5
Shares that would be antidilutive as a result of net loss | Reportable_Segments |  | 2 |  | 1

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- Definition Shares that would be antidilutive as a result of net loss + References No definition available. + Details
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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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