Goodwill and Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 years		Dec. 31, 2010		Dec. 31, 2009
Finite-Lived Intangible Assets [Line Items]
Intangible Assets With Indefinite Lives Gross	$ 128	[1]	$ 128	[1]
Indefinite Lived Intangible Assets Accumulated Amortization	(6)	[1]	(6)	[1]
Intangible Assets WIth Indefinite Lives Net	122		122
Finite Lived and Indefinite Lived Intangible Assets Gross	183	[1]	185	[1]
Finite Lived And Indefinite Lived Intangible Assets Accumulated Amortization	(26)	[1]	(24)	[1]
Intangible Assets	157		161
Intangible Assets (Note 11)	157		161
Amortization of Intangible Assets	4		4		3
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Future Amortization Expense, Year One	4
Future Amortization Expense, Year Two	4
Future Amortization Expense, Year Three	4
Future Amortization Expense, Year Four	4
Future Amortization Expense, Year Five	4
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	24
Goodwill, Impairment Loss	0		0		0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0		0
Trademarks and Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	22	[1]	25	[1]
Finite-Lived Intangible Assets, Accumulated Amortization	(12)	[1]	(12)	[1]
Finite-Lived Intangible Assets, Net	10		13
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	33	[1]	32	[1]
Finite-Lived Intangible Assets, Accumulated Amortization	(8)	[1]	(6)	[1]
Finite-Lived Intangible Assets, Net	$ 25		$ 26

[1] Includes impact of foreign currency translation.