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Miscellaneous financial information (Tables)
 12 Months Ended
Dec. 31, 2013
Inventories of Crude Oil and Products

Inventories of crude oil and products at year-end consisted of the following:

 

millions of dollars    2013      2012  

Crude oil

      628                     473   

Petroleum products

      340         284   

Chemical products

      54         60   

Natural gas and other

      8         10   

Total inventories of crude oil and products

      1,030         827