Contingent Liabilities and Litigation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Sep. 30, 2012	Sep. 30, 2013 State of West Virginia vs Cardinal Health, Inc
Loss Contingencies [Line Items]
Loss Contingency, Number of Defendants		14
Gain (Loss) Related to Litigation Settlement [Abstract]
Litigation Settlement, Gross	$ 22

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration