Revenues and Segment Information, Geographic Information by Country for Revenue and Long-Lived Assets (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Revenues by Geographic Area
Revenues	[1]	$ 129,881	$ 144,766	$ 176,383
Geographic Information by Country for Long-Lived Assets
Long-lived assets		32,055	32,649
U.S. [Member]
Operating Revenues by Geographic Area
Revenues		93,311	104,208	126,722
Geographic Information by Country for Long-Lived Assets
Long-lived assets		28,359	28,868
Canada [Member]
Operating Revenues by Geographic Area
Revenues		8,577	10,107	11,743
Geographic Information by Country for Long-Lived Assets
Long-lived assets		1,414	1,598
U.K. and Ireland [Member]
Operating Revenues by Geographic Area
Revenues		15,236	16,148	17,822
Geographic Information by Country for Long-Lived Assets
Long-lived assets		1,484	1,346
Mexico and Peru [Member]
Operating Revenues by Geographic Area
Revenues		5,405	6,438	8,396
Geographic Information by Country for Long-Lived Assets
Long-lived assets		798	837
Other Countries [Member]
Operating Revenues by Geographic Area
Revenues		$ 7,352	$ 7,865	$ 11,700

[1] Includes excise taxes on sales by certain of our foreign operations of $5,907 million, $5,765 million, and $5,194 million for the years ended December 31, 2024, 2023, and 2022.