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Revenue
 9 Months Ended
Sep. 30, 2024
Revenue from Contract with Customer [Abstract]  
Revenue Revenue
The following table presents our revenues from external customers disaggregated by segment and product line.

Three Months Ended 
September 30,		Nine Months Ended 
September 30,
(Millions of dollars)2024202320242023
Refining & Marketing
Refined products$31,462 $36,971 $94,803 $101,758 
Crude oil1,826 2,188 5,713 5,393 
Services and other487 466 1,398 1,304 
Total revenues from external customers33,775 39,625 101,914 108,455 
Midstream
Refined products431 477 1,197 1,274 
Services and other901 815 2,616 2,395 
Total revenues from external customers1,332 1,292 3,813 3,669 
Sales and other operating revenues$35,107 $40,917 $105,727 $112,124 
We do not disclose information on the future performance obligations for any contract with expected duration of one year or less at inception. As of September 30, 2024, we do not have future performance obligations that are material to future periods.
Receivables
On the accompanying consolidated balance sheets, receivables, less allowance for doubtful accounts primarily consists of customer receivables. Significant, non-customer balances included in our receivables at September 30, 2024 include matching buy/sell receivables of $4.05 billion.