Acquisitions (Schedule of Estimated Fair Values of the Assets Acquired and Liabilities Assumed) (Details) (USD $) In Millions, unless otherwise specified				12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 AssuraMed	Jun. 30, 2013 Customer relationships AssuraMed	Jun. 30, 2013 Trade names AssuraMed	Jun. 30, 2013 Other AssuraMed
Identifiable intangible assets:
Identifiable intangible asset				$ 627	$ 460	$ 160	$ 7
Weighted-average useful life				9 years	9 years	11 years	3 years
Cash and equivalents				25
Trade receivables				103
Inventories				69
Prepaid expenses and other				102
Property and equipment				40
Accounts payable				(71)
Other accrued liabilities				(24)
Deferred income taxes and other liabilities				(180)
Total identifiable net assets acquired				691
Goodwill	4,878	4,601	3,978	1,404
Total net assets acquired				$ 2,095