Revenue (Disaggregated by Segment and Product Line) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Sales and other operating revenues		$ 138,864	$ 148,379	$ 177,453
Refining & Marketing
Sales and other operating revenues	[1]	131,588	141,835	171,461
Refining & Marketing | Refined products
Sales and other operating revenues		122,429	132,675	160,737
Refining & Marketing | Crude oil
Sales and other operating revenues		7,298	7,423	8,962
Refining & Marketing | Services and other
Sales and other operating revenues		1,861	1,737	1,762
Midstream
Sales and other operating revenues	[1]	5,197	4,911	5,366
Midstream | Refined products
Sales and other operating revenues		1,668	1,675	2,219
Midstream | Services and other
Sales and other operating revenues	[2]	3,529	3,236	3,147
Renewable Diesel
Sales and other operating revenues	[1]	2,079	1,633	626
Renewable Diesel | Refined products
Sales and other operating revenues		2,073	1,628	625
Renewable Diesel | Services and other
Sales and other operating revenues		$ 6	$ 5	$ 1

[1] Includes sales to related parties. See Note 7 for additional information.

[2] Includes sales-type lease revenue. See Note 26.