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Property, Plant and Equipment, Net (Schedule of Capitalized Interest and Depreciation Expense) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Property, Plant and Equipment, Net [Abstract]      
Capitalized interest $ 4 $ 2 $ 2
Depreciation expense $ 232 $ 195 $ 213