Segment Reporting (Segment Data Schedule) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net revenues	$ 6,209	$ 6,508	$ 11,785	$ 12,227
Amortization of intangibles	(37)	(27)	(64)	(45)	$ (128)
Operating income	2,533	2,905	5,207	5,662
Interest and other debt expense, net	261	257	515	486
Net periodic benefit income, excluding service cost	(25)	(31)	(49)	(62)
(Income) losses from investments in equity securities	(119)	(127)	(414)	(47)
Gain on the sale of IQOS System commercialization rights	(2,700)	0	(2,700)	0
Earnings before income taxes	5,116	2,806	7,855	5,285
Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	5,495	5,820	10,401	10,910
Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	711	680	1,362	1,308
All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	3	8	22	9
Operating Segments [Member] | Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Operating income	2,807	2,846	5,246	5,349
Operating Segments [Member] | Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Operating income	97	443	532	859
Operating Segments [Member] | All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	(111)	(4)	(172)	(13)
General corporate [Member]
Segment Reporting Information [Line Items]
General corporate expenses	$ (223)	$ (353)	$ (335)	$ (488)