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Related Party Transactions (Tables)
12 Months Ended
Dec. 31, 2011
Related Party Transactions [Abstract]  
Related party transactions
                         
    2011     2010     2009  
    (Millions of dollars)  

Purchases of petroleum products:

                       

HOVENSA*

  $ 3,806     $ 4,307     $ 3,659  

Sales of petroleum products and crude oil:

                       

WilcoHess

    2,898       2,113       1,634  

HOVENSA

    710       607       530  

 

 

 

* Following the closure of HOVENSA’s refinery in St. Croix as announced in January 2012, the Corporation will no longer purchase 50% of HOVENSA’s production of refined petroleum products, after any sales to unaffiliated parties.
Accounts receivable/payable from/to related parties
                 
    2011     2010  
    (Millions of dollars)  
     

WilcoHess

  $ 127     $ 110  

HOVENSA, net

    (22     (107