Segment Reporting (Schedule of Tobacco and Health and Certain Other Litigation Items) (Details) - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Loss contingency accrual, provision	$ 3	$ 22	$ 48	$ 90
General corporate expenses [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Loss contingency accrual, provision	(1)	0	0	30
Segment Reconciling Items [Member] | Interest and other debt expense, net [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Loss contingency accrual, provision	0	1	4	1
PM USA [Member] | Operating Segments [Member] | Smokeable Products Segment [Member] | Operating Income (Loss) [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Loss contingency accrual, provision	$ 4	$ 21	$ 44	$ 59