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Pension Benefit Plans and Other Postretirement Benefits (Details 6) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Estimated future benefit payments      
Defined contribution plans for salaried and hourly U.S. employees $ 8 $ 7 $ 7
U.S Pension Plans
      
Defined Benefit Plan Disclosure      
Fair value at beginning of year 2,195 2,061  
Net decrease (184) 134  
Fair value at end of year 2,011 2,195  
Contribution to defined benefit plan in 2012 95    
Estimated future benefit payments      
2012 172    
2013 169    
2014 169    
2015 169    
2016 168    
2017 - 2021 846    
Non-U.S. Pension Plans
      
Defined Benefit Plan Disclosure      
Fair value at beginning of year 1,279 1,223  
Net decrease 46 56  
Fair value at end of year 1,325 1,279  
Estimated future benefit payments      
2012 86    
2013 82    
2014 86    
2015 88    
2016 88    
2017 - 2021 464    
U.S Postretirement Benefit Plans
      
Estimated future benefit payments      
2012 16    
2013 16    
2014 15    
2015 15    
2016 14    
2017 - 2021 66    
Non-U.S. Postretirement Benefit Plans
      
Estimated future benefit payments      
2012 4    
2013 4    
2014 4    
2015 4    
2016 5    
2017 - 2021 25    
Level 3 | Non-U.S. Pension Plans
      
Defined Benefit Plan Disclosure      
Fair value at beginning of year 19 20  
Net decrease (3) (1)  
Fair value at end of year $ 16 $ 19