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Cover Page - USD ($)
 12 Months Ended
Jun. 30, 2023
Jul. 31, 2023
Dec. 31, 2022
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Entity File Number 1-11373    
Entity Registrant Name Cardinal Health, Inc.    
Entity Incorporation, State or Country Code OH    
Entity Tax Identification Number 31-0958666    
Entity Address, Address Line One 7000 Cardinal Place    
Entity Address, City or Town Dublin    
Entity Address, State or Province OH    
Entity Address, Postal Zip Code 43017    
City Area Code (614)    
Local Phone Number 757-5000    
Title of 12(b) Security Common shares (without par value)    
Trading Symbol CAH    
Security Exchange Name NYSE    
Entity Well-Known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 19,775,475,828
Entity Common Stock, Shares Outstanding   250,681,620  
Amendment Flag false    
Document Financial Statement Error Correction [Flag] false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000721371    
Current Fiscal Year End Date --06-30    
Documents Incorporated by Reference
Documents Incorporated by Reference:
Portions of the registrant’s Definitive Proxy Statement to be filed for its 2023 Annual Meeting of Shareholders are incorporated by reference into the sections of this Form 10-K addressing the requirements of Part III of Form 10-K.
    
Document Period End Date Jun. 30, 2023