Segment Reporting (Smokeable Products Segment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Net revenues	$ 6,072	$ 6,259	$ 17,433	$ 18,044
Operating income	3,230	3,152	8,248	8,359
Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	5,387	5,540	15,366	15,941
Settlement charges	(792)	(875)	(2,278)	(2,654)
Excise taxes on products	(797)	(888)	(2,299)	(2,630)
Other segment items	(856)	(840)	(2,448)	(2,474)
Operating income	$ 2,942	$ 2,937	$ 8,341	$ 8,183