Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Mar. 31, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Taxes [Line Items]
Effective income tax rate, excluding foreign tax credit carryforwards and reinvestment of foreign earnings			25.00%
Foreign tax credit carryforwards	$ 142
Foreign tax credit carryforward period	ten year carryforward period
Foreign tax credit carryforward expiration		Dec. 31, 2014
Increases in tax positions for the current year		15
Decreases in tax positions due to exchange rate changes		6
Advanced Engineered Materials [Member] | Polyplastics Co., Ltd. [Member]
Income Taxes [Line Items]
Cash dividend payment	72
Deferred tax liability	$ 38