Segment Reporting (Segment Data Schedule) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net revenues	$ 23,279	$ 24,018	$ 24,483
Operating income	9,899	11,241	11,547
Amortization of intangibles	(132)	(139)	(128)
Interest and other debt expense, net	1,079	1,037	989
Net periodic benefit income, excluding service cost	(59)	(102)	(127)
(Income) losses from investments in equity securities	(510)	(652)	(243)
Gain on the sale of IQOS System commercialization rights	0	(2,700)	0
Earnings before income taxes	9,389	13,658	10,928
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Segment Reporting Information [Line Items]
General corporate expenses	(255)	(476)	(643)
Smokeable Products [Member]
Segment Reporting Information [Line Items]
Net revenues	20,485	21,204	21,756
Operating income	10,984	10,821	10,670
Smokeable Products [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	10,984	10,821	10,670
Oral Tobacco Products [Member]
Segment Reporting Information [Line Items]
Net revenues	2,802	2,776	2,667
Oral Tobacco Products [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	1,828	1,449	1,722
E-Vapor [Member]
Segment Reporting Information [Line Items]
Net revenues	(13)	40	62
E-Vapor [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	(2,297)	(171)	(16)
All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	5	(2)	(2)
All Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	$ (229)	$ (243)	$ (58)