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Contingent Liabilities and Litigation (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2014 | Mar. 31, 2013
Gain (Loss) Related to Litigation Settlement [Abstract] |  |  |  |
Litigation Settlement, Gross | $ 9 | $ 3 | $ 24 | $ 37
State of West Virginia vs Cardinal Health, Inc |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Number of Defendants |  |  | 13 |

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- Definition Number of defendants named in a legal action. + References No definition available. + Details
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