Income Taxes (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of fiscal year	$ 650	$ 654	$ 747
Additions for tax positions of the current year	16	22	16
Additions for tax positions of prior years	94	97	68
Reductions for tax positions of prior years	(40)	(30)	(3)
Settlements with tax authorities	(210)	(93)	(172)
Expiration of the statute of limitations	0	0	(2)
Balance at end of fiscal year	$ 510	$ 650	$ 654