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Related Party Transactions
9 Months Ended
Sep. 30, 2013
Related Party Transactions [Abstract]  
Related Party Transactions
Note 20—Related Party Transactions
          
We consider our equity method investments to be related parties. Significant transactions with related parties were:
          
  Millions of Dollars
  Three Months Ended Nine Months Ended
 September 30September 30
  2013 2012 2013 2012
          
Operating revenues and other income $ 35  9  74  42
Purchases*  48  92  138  228
Operating expenses and selling, general and administrative        
 expenses  52  52  141  133
Net interest expense**  6  8  22  30
*2012 has been restated to include certain related party transactions.
**We paid interest to, or received interest from, various affiliates, including FCCL Partnership. See Note 7—Investments, Loans and Long-
 Term Receivables and Note 11—Joint Venture Acquisition Obligation, for additional information on loans to affiliated companies.