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Other Receivables and Assets (Tables)
 12 Months Ended
Dec. 31, 2011
Other Receivables and Assets [Abstract]  
Other receivables and assets
                 
    December 31,
2011		     December 31,
2010		  

Receivables from government agencies

     152       171  

Taxes and other government receivables

     77       117  

Advances

     118       68  

Prepayments

     46       51  

Loans and deposits

     14       15  

Interest receivable

     4       6  

Derivative instruments

     2       85  

Receivables from equity-method investments

     20       33  

Other current assets

     73       63  

Total

     506       609