Income Taxes (Schedule of Unrecognized Tax Benefits, Roll Forward) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward
Unrecognized Tax Benefits, Balance at beginning of fiscal year	$ 654	$ 747	$ 731
Unrecognized Tax Benefits, Additions for tax positions of the current year	22	16	16
Unrecognized Tax Benefits, Additions for tax positions of prior years	97	68	58
Unrecognized Tax Benefits, Reductions for tax positions of prior years	(30)	(3)	(20)
Unrecognized Tax Benefits, Settlements with tax authorities	(93)	(172)	(36)
Unrecognized Tax Benefits, Expiration of the statute of limitations	0	(2)	(2)
Unrecognized Tax Benefits, Balance at end of fiscal year	$ 650	$ 654	$ 747