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Segment Information (Total Assets by Segment) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Assets	$ 24,260	$ 22,846	$ 19,990
Pharmaceutical
Assets	16,642	16,126	12,103
Medical
Assets	4,399	3,895	3,868
Corporate
Assets	$ 3,219	$ 2,825	$ 4,019

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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