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Other Non-Current Liabilities (Tables)
 12 Months Ended
Dec. 31, 2012
Other Non-Current Liabilities [Abstract]  
Summary of other non-current liabilities
                 
(in $ millions)   December 31,
2012		     December 31,
2011		  

Pension and post-retirement benefit liabilities

     176       188  

Income tax payable

     23       26  

Derivative liabilities

     —       2  

Other

     75       63  
   

 

 

    

 

 

  
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