XML 76 R48.htm IDEA: XBRL DOCUMENT
v3.19.2

Basis of Presentation and Summary of Significant Accounting Policies (Narrative, Vendor Reserves) (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Jun. 30, 2018
--- | --- | ---
Accounting Policies [Abstract] |  |
Vendor reserves | $ 53 | $ 45

X
- Definition Total of reserves, relating to vendor disputes or deductions, that are netted against vendor liabilities in the ordinary course of business. + References No definition available. + Details
Name: | cah_VendorReserves
Namespace Prefix: | cah_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration