Revenue

3 Months Ended

Mar. 31, 2023

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  March 31,
(Millions of dollars)	2023		2022
Refining & Marketing
Refined products	$	31,923	$	33,593
Crude oil	1,330		2,889
Services and other	410		310
Total revenues from external customers	33,663		36,792
Midstream
Refined products	420		497
Services and other	781		769
Total revenues from external customers	1,201		1,266
Sales and other operating revenues	$	34,864	$	38,058

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 March 31, 2023, 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 March 31, 2023 include matching buy/sell receivables of $4.24 billion.