Segment Reporting (Segment Data Schedule) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net revenues	$ 6,259	$ 6,281	$ 18,044	$ 18,508
Amortization of intangibles	(38)	(42)	(102)	(87)	$ (128)
Operating income	3,152	3,089	8,359	8,751
Interest and other debt expense, net	267	272	782	758
Net periodic benefit income, excluding service cost	(25)	(33)	(74)	(95)
(Income) losses from investments in equity securities	(116)	(58)	(530)	(105)
Gain on the sale of IQOS System commercialization rights	0	0	(2,700)	0
Earnings before income taxes	3,026	2,908	10,881	8,193
Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	5,540	5,572	15,941	16,482
Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	722	685	2,084	1,993
All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	(3)	24	19	33
Operating Segments [Member] | Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Operating income	2,937	2,743	8,183	8,092
Operating Segments [Member] | Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Operating income	464	455	996	1,314
Operating Segments [Member] | All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	(119)	(4)	(291)	(17)
General corporate [Member]
Segment Reporting Information [Line Items]
General corporate expenses	$ (92)	$ (63)	$ (427)	$ (551)