Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Taxes [Line Items]
Effective income tax rate, excluding foreign tax credit carryforwards and reinvestment of foreign earnings		19.00%
Foreign tax credit carryforwards		$ 142
Foreign tax credit carryforward period		ten year carryforward period
Foreign tax credit carryforward expiration		2014 through 2021
Increases in tax positions for the current year	4
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