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Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Accounting Policies (Textual) [Abstract]      
Cumulative probability threshold for realization of income tax benefits 50.00%    
Minimum recognizable tax benefit 50.00%    
Sustainability threshold for uncertain tax position 50.00%    
Advertising expenses $ 12 $ 11 $ 9
Period after fabrication to be considered for determining fabrication cost 6 months    
Maximum [Member]
      
Schedule of Equity Method Investments [Line Items]      
Equity investments, Ownership percentage 50.00%    
Minimum [Member]
      
Schedule of Equity Method Investments [Line Items]      
Equity investments, Ownership percentage 20.00%    
Buildings [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful lives of Property, Plant and Equipment, Average 33    
Facilities and Leasehold Improvements [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful lives of Property, Plant and Equipment, Minimum 5    
Estimated useful lives of Property, Plant and Equipment, Maximum 10    
Machinery and Equipment [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful lives of Property, Plant and Equipment, Minimum 3    
Estimated useful lives of Property, Plant and Equipment, Maximum 10    
Computer and Research and Development Equipment [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful lives of Property, Plant and Equipment, Minimum 3    
Estimated useful lives of Property, Plant and Equipment, Maximum 6    
Property, Plant and Equipment, Other Types [Member]
      
Property, Plant and Equipment [Line Items]      
Estimated useful lives of Property, Plant and Equipment, Minimum 2    
Estimated useful lives of Property, Plant and Equipment, Maximum 5    
Technology and Licenses [Member]
      
Intangible Assets (Textual) [Line Items]      
Estimated useful lives of intangible assets, minimum 3    
Estimated useful lives of intangible assets, maximum 7    
Trademarks [Member]
      
Intangible Assets (Textual) [Line Items]      
Estimated useful lives of intangible assets, minimum 2    
Estimated useful lives of intangible assets, maximum 3    
Contractual customer relationships [Member]
      
Intangible Assets (Textual) [Line Items]      
Estimated useful lives of intangible assets, minimum 4    
Estimated useful lives of intangible assets, maximum 12    
Purchased software [Member]
      
Intangible Assets (Textual) [Line Items]      
Estimated useful lives of intangible assets, maximum 4