Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended	6 Months Ended		12 Months Ended			1 Months Ended	6 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2011 Noncontrolling Interests [Member]	Dec. 31, 2012 Building [Member] Minimum [Member]	Dec. 31, 2012 Building [Member] Maximum [Member]	Dec. 31, 2012 Machinery And Equipment [Member] Minimum [Member]	Dec. 31, 2012 Machinery And Equipment [Member] Maximum [Member]
Principles of Consolidation
Difference in financial statement date of certain subsidiaries and affiliates included in Company's results (in days)		93 days
Reporting period lag eliminated in the reporting of one consolidated subsidiary	1 month
Noncontrolling interests previously associated with mandatorily redeemable instruments				$ 184,000,000			$ 174,000,000
Use of Estimates
Effect of change in accounting estimate on after-tax earnings					83,000,000
Effect of change in accounting estimate on diluted earnings per share (in dollars per share)					$ 0.13
Receivables
Allowance for estimated uncollectible trade accounts receivable		87,000,000		92,000,000	100,000,000
Trade accounts receivable due from unconsolidated affiliates		566,000,000		266,000,000	367,000,000
Property, Plant, and Equipment
Property, Plant and Equipment, Useful Life								10 years	40 years	3 years	30 years
Capitalized interest on major construction projects		12,000,000	9,000,000	21,000,000	7,000,000	75,000,000
Asset Abandonments and Write-Downs
Impairment of long lived assets		0	337,000,000	367,000,000	2,000,000	9,000,000
Net Sales
Net sales to unconsolidated affiliates		4,000,000,000	4,500,000,000	7,700,000,000	7,100,000,000	7,100,000,000
Research and Development
Research and development expenses, net of expenditures subsequently reimbursed by government grants		$ 28,000,000	$ 29,000,000	$ 56,000,000	$ 60,000,000	$ 56,000,000