Income Taxes (Schedule of Deferred Income Tax Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Deferred income tax assets:
Deferred Income Tax Assets, Receivable basis difference	$ 50	$ 46
Deferred Income Tax Assets, Accrued liabilities	115	107
Deferred Income Tax Assets, Share-based compensation	66	90
Deferred Income Tax Assets, Loss and tax credit carryforwards	158	120
Deferred Income Tax Assets, Deferred tax assets related to uncertain tax positions	127	118
Deferred Income Tax Assets, Other	82	85
Deferred Income Tax Assets, Total deferred income tax assets	598	566
Deferred Income Tax Assets, Valuation allowance for deferred income tax assets	(88)	(86)
Deferred Income Tax Assets, Net deferred income tax assets	510	480
Deferred income tax liabilities:
Deferred Income Tax Liabilities, Inventory basis differences	(1,160)	(1,067)
Deferred Income Tax Liabilities, Property-related	(173)	(180)
Deferred Income Tax Liabilities, Goodwill and other intangibles	(299)	(146)
Deferred Income Tax Liabilities, Unremitted foreign earnings	0	(64)
Deferred Income Tax Liabilities, Other	(6)	(5)
Deferred Income Tax Liabilities, Total deferred income tax liabilities	(1,638)	(1,462)
Deferred Income Tax Liabilities, Net deferred income tax liability	$ (1,128)	$ (982)