Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Income Taxes (Textuals) [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%	35.00%
Tax benefits primarily from the expiration of the statutes of limitations for the assessment of taxes in various foreign jurisdictions			$ 6	$ 7
Tax benefit related to reversal of exposure previously recorded				3
Tax provison from acquisition		3		3
Net deferred tax assets (liabilities)	(50)		(50)		(17)
Increase in net deferred tax liabilities related to acquisition			43
Amount relating to (reduction) of federal net operating loss carry forwards			(620)
Provision (benefit) for income taxes	6	8	7	9
Effective tax rates	2.20%	2.40%	1.00%	1.10%
Amount relating to (reduction) of uncertain tax benefits			(180)
Federal research and development tax credits					$ 145