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Pensions Benefit Plans and Other Postretirement Benefits (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Amortization:    
Special termination benefits $ 8  
U.S Pension Plans
    
Components of the net pension expense (income) and postretirement benefit cost    
Service cost 7 7
Interest cost 27 28
Expected asset return (46) (46)
Amortization:    
Actuarial loss 28 24
Net periodic pension and postretirement benefit cost 16 13
Special termination benefits 8  
Non-U.S. Pension Plans
    
Components of the net pension expense (income) and postretirement benefit cost    
Service cost 8 7
Interest cost 17 19
Expected asset return (23) (22)
Amortization:    
Actuarial loss 8 5
Net periodic pension and postretirement benefit cost 10 9
U.S Postretirement Benefit Plans
    
Components of the net pension expense (income) and postretirement benefit cost    
Service cost   1
Interest cost 1 2
Amortization:    
Prior service credit (1) (1)
Actuarial loss 2 1
Net amortization 1  
Net periodic pension and postretirement benefit cost 2 3
Non-U.S. Postretirement Benefit Plans
    
Components of the net pension expense (income) and postretirement benefit cost    
Interest cost 1 1
Amortization:    
Net periodic pension and postretirement benefit cost $ 1 $ 1