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Miscellaneous Financial Information (Tables)
12 Months Ended
Dec. 31, 2018
Miscellaneous Financial Information [Abstract]  
Crude Oil, Products And Merchandise
20182017
(millions of dollars)
Crude oil4,7834,635
Petroleum products5,6664,333
Chemical products3,8213,283
Gas/other533620
Total14,80312,871