The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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+ Details

Other (Income) Expense - Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended		12 Months Ended			18 Months Ended
	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2012 Asset Impairment, Exit, And Restructuring Charges [Member]
Component of Operating Other Cost and Expense [Line Items]
Gain related to the Total Return Swap instruments related to investment in GrainCorp		$ 62
Gain related to the sale of exchange membership interests		39
Gain on Golden Peanut revaluation	71				71
Additional ownership interest acquired, percentage					50.00%
Realized gains on sales of available-for-sale marketable securities		8	17	38	13	12
Realized losses on sales of available-for-sale marketable securities		2	1	1	1	3
Impairment losses on securities				$ 12		$ 15	$ 13