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Long-Term Employee Benefit Liabilities (Details 6) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Amounts recorded in the consolidated balance sheet      
Non-current liability $ (419) $ (356) $ (339)
Net periodic benefit cost      
Curtailment gain     26
Retirement medical benefits plans [Member]
      
Projected benefit obligation      
Beginning of year 36 36 66
Current service cost     1
Interest cost 2 2 3
Actuarial losses (gains) and changes in actuarial assumptions 4 1 3
Benefits paid (3) (3) (3)
Curtailment     (36)
Currency translation     2
Ending funded status 39 36 36
Amounts recorded in the consolidated balance sheet      
Current liability 2 2 2
Non-current liability 37 34 34
Net amount 39 36 36
Amounts recorded in accumulated other comprehensive income      
Unrecognized past service costs 3 4 3
Unrecognized actuarial losses 12 18 20
Total accumulated other comprehensive income 15 22 23
Net periodic benefit cost      
Current service cost     1
Interest cost 2 2 3
Actuarial losses (1) (1) 2
Past service cost amortization (1)    
Curtailment gain     (26)
Net periodic benefit cost $ 0 $ 1 $ (20)