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Segment Reporting (Narrative) (Details) - USD ($)	3 Months Ended			9 Months Ended
Segment Reporting (Narrative) (Details) - USD ($)	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Exit or implementation costs					$ 0
Skoal [Member]
Segment Reporting Information [Line Items]
Impairment of goodwill			$ 354,000,000		354,000,000
Initiative [Member]
Segment Reporting Information [Line Items]
Exit or implementation costs	$ 13,000,000			$ 43,000,000
Oral Tobacco Products [Member]
Segment Reporting Information [Line Items]
Other segment items	$ (230,000,000)	$ (258,000,000)		$ (706,000,000)	$ (1,088,000,000)