Other (Income) Expense - Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2014		Dec. 31, 2013		Jun. 30, 2012
Other Income and Expenses [Line Items]
(Gain) loss on sale of assets and equity dilution	$ (51)	$ (17)		$ (351)		$ (41)		$ (30)
Realized gains on sales of available-for-sale marketable securities	8	17				8		38
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	0	13	[1]	6	[1]	166	[1]	25	[1]
JV Conversion [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale of assets and equity dilution				(156)
Sale of Business [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale of assets and equity dilution				(126)
Exchange Membership [Member]
Other Income and Expenses [Line Items]
(Gain) loss on sale of assets and equity dilution	$ (39)

[1] Asset impairment charge - equity securities for the fiscal year ended December 31, 2014, the six months ended December 31, 2011 and the year ended June 30, 2012 consisted of other-than-temporary investment writedowns of available for sale securities in Corporate. Asset impairment charge - equity securities for the fiscal year ended December 31, 2013 consisted of other-than-temporary impairment charges of $155 million on the Company's GrainCorp investment in the Agricultural Services segment and $11 million on one other available for sale security in Corporate.