Other (Income) Expense - Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2010	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Component of Operating Other Cost and Expense [Line Items]
Gain on Golden Peanut revaluation	$ 71		$ 71
Additional ownership interest acquired, percentage			50.00%
Realized gains on sales of available-for-sale marketable securities		38	13	12
Realized losses on sales of available-for-sale marketable securities		1	1	3
Impairment losses on securities		12		15
Asset Impairment, Exit, And Restructuring Charges [Member]
Component of Operating Other Cost and Expense [Line Items]
Impairment losses on securities		$ 12