Income Taxes Income Taxes (Schedule of Reconciliation of Unrecognized Tax Benefits (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of fiscal year	$ 747	$ 731	$ 849
Additions for tax positions of the current year	16	16	43
Additions for tax positions of prior years	68	58	90
Reductions for tax positions of prior years	(3)	(20)	(240)
Settlements with tax authorities	(172)	(36)	(10)
Expiration of the statute of limitations	(2)	(2)	(1)
Balance at end of fiscal year	$ 654	$ 747	$ 731