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Summary Of Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Summary Of Significant Accounting Policies [Line Items]      
Research, development and engineering costs $ 43 $ 43 $ 42
Land Improvements [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives (in years) 25 years    
Building And Building Improvements [Member] | Minimum [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives (in years) 25 years    
Building And Building Improvements [Member] | Maximum [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives (in years) 40 years    
Machinery And Equipment [Member] | Minimum [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives (in years) 3 years    
Machinery And Equipment [Member] | Maximum [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives (in years) 14 years