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Income Taxes (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Income Taxes [Line Items]  
Foreign tax credit carryforwards $ 142
Foreign tax credit carryforward period ten year carryforward period
Foreign tax credit carryforward expiration 2014 through 2021
Advanced Engineered Materials [Member] | Polyplastics Co., Ltd. [Member]
 
Income Taxes [Line Items]  
Cash dividend payment 72
Deferred tax liability $ 38