Segment Reporting (Non-Participating Manufacturer Adjustment Items) (Details) - Non-Participating Manufacturer Arbitration Panel Decision [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
NPM Adjustment to Cost Of Sales And Interest Expense [Member]
Segment Reporting Information [Line Items]
(Gain) loss related to litigation settlement	$ (20)	$ (27)	$ (50)
Operating Segments [Member] | Smokeable Products [Member] | Operating Income (Loss) [Member] | NPM Adjustment to Cost Of Sales [Member] | PM USA [Member]
Segment Reporting Information [Line Items]
(Gain) loss related to litigation settlement	(24)	(29)	(29)
Interest and other debt expense, net [Member] | Interest And Other Debt Expense, Net [Member] | NPM Adjustment To Interest Expense [Member]
Segment Reporting Information [Line Items]
(Gain) loss related to litigation settlement	$ 4	$ 2	$ (21)